Fix variable initialization to 'auto' for getB()

It does not make sense to return a `const bool&` as we are dealing with
Boolean literals that are `prvalue`s of type bool.

The compiler is smart enough to do the necessary optimizations wherever
is applicable.

src/btop_config.hpp

@@ -113,10 +113,3 @@ namespace Config {
 	//* Write the config file to disk
 	void write();
 }
-
-
-
-
-
-
-

src/btop_draw.cpp

@@ -232,8 +232,8 @@ namespace Draw {
                      const string title, const string title2, const int num) {
 		string out;
 		if (line_color.empty()) line_color = Theme::c("div_line");
-        const auto tty_mode = Config::getB("tty_mode");
+        auto tty_mode = Config::getB("tty_mode");
-        const auto rounded = Config::getB("rounded_corners");
+        auto rounded = Config::getB("rounded_corners");
 		const string numbering = (num == 0) ? "" : Theme::c("hi_fg") + (tty_mode ? std::to_string(num) : Symbols::superscript.at(clamp(num, 0, 9)));
 		const auto& right_up = (tty_mode or not rounded ? Symbols::right_up : Symbols::round_right_up);
 		const auto& left_up = (tty_mode or not rounded ? Symbols::left_up : Symbols::round_left_up);
@@ -300,7 +300,7 @@ namespace Draw {
 		}
 
 		auto& out = Global::clock;
-		const auto& cpu_bottom = Config::getB("cpu_bottom");
+        auto cpu_bottom = Config::getB("cpu_bottom");
 		const auto& x = Cpu::x;
 		const auto y = (cpu_bottom ? Cpu::y + Cpu::height - 1 : Cpu::y);
 		const auto& width = Cpu::width;
@@ -503,9 +503,9 @@ namespace Cpu {
 	string draw(const cpu_info& cpu, const bool force_redraw, const bool data_same) {
 		if (Runner::stopping) return "";
 		if (force_redraw) redraw = true;
-		const bool show_temps = (Config::getB("check_temp") and got_sensors);
+        bool show_temps = (Config::getB("check_temp") and got_sensors);
         auto single_graph = Config::getB("cpu_single_graph");
-		const bool hide_cores = show_temps and (cpu_temp_only or not Config::getB("show_coretemp"));
+        bool hide_cores = show_temps and (cpu_temp_only or not Config::getB("show_coretemp"));
 		const int extra_width = (hide_cores ? max(6, 6 * b_column_size) : 0);
 		auto& graph_up_field = Config::getS("cpu_graph_upper");
 		auto& graph_lo_field = Config::getS("cpu_graph_lower");
@@ -1590,7 +1590,7 @@ namespace Draw {
 		//* Calculate and draw cpu box outlines
 		if (Cpu::shown) {
 			using namespace Cpu;
-			const bool show_temp = (Config::getB("check_temp") and got_sensors);
+            bool show_temp = (Config::getB("check_temp") and got_sensors);
 			width = round((double)Term::width * width_p / 100);
 			height = max(8, (int)ceil((double)Term::height * (trim(boxes) == "cpu" ? 100 : height_p) / 100));
 			x = 1;

src/btop_menu.cpp

@@ -632,8 +632,8 @@ namespace Menu {
 	msgBox::msgBox() {}
 	msgBox::msgBox(int width, int boxtype, vector<string> content, string title)
 	: width(width), boxtype(boxtype) {
-		const auto& tty_mode = Config::getB("tty_mode");
+        auto tty_mode = Config::getB("tty_mode");
-		const auto& rounded = Config::getB("rounded_corners");
+        auto rounded = Config::getB("rounded_corners");
 		const auto& right_up = (tty_mode or not rounded ? Symbols::right_up : Symbols::round_right_up);
 		const auto& left_up = (tty_mode or not rounded ? Symbols::left_up : Symbols::round_left_up);
 		const auto& right_down = (tty_mode or not rounded ? Symbols::right_down : Symbols::round_right_down);
@@ -722,7 +722,7 @@ namespace Menu {
 	};
 
 	int signalChoose(const string& key) {
-		auto& s_pid = (Config::getB("show_detailed") and Config::getI("selected_pid") == 0 ? Config::getI("detailed_pid") : Config::getI("selected_pid"));
+        auto s_pid = (Config::getB("show_detailed") and Config::getI("selected_pid") == 0 ? Config::getI("detailed_pid") : Config::getI("selected_pid"));
         static int x{}; // defaults to 0
         static int y{}; // defaults to 0
         static int selected_signal = -1;
@@ -852,7 +852,7 @@ namespace Menu {
 	}
 
 	int signalSend(const string& key) {
-		auto& s_pid = (Config::getB("show_detailed") and Config::getI("selected_pid") == 0 ? Config::getI("detailed_pid") : Config::getI("selected_pid"));
+        auto s_pid = (Config::getB("show_detailed") and Config::getI("selected_pid") == 0 ? Config::getI("detailed_pid") : Config::getI("selected_pid"));
 		if (s_pid == 0) return Closed;
 		if (redraw) {
 			atomic_wait(Runner::active);

src/btop_tools.cpp

@@ -349,7 +349,7 @@ namespace Tools {
 	string floating_humanizer(uint64_t value, const bool shorten, size_t start, const bool bit, const bool per_second) {
 		string out;
 		const size_t mult = (bit) ? 8 : 1;
-		const bool mega = Config::getB("base_10_sizes");
+        bool mega = Config::getB("base_10_sizes");
 
         // taking advantage of type deduction for array creation (since C++17)
         // combined with string literals (operator""s)

src/freebsd/btop_collect.cpp

@@ -614,9 +614,9 @@ namespace Mem {
 		if (Runner::stopping or (no_update and not current_mem.percent.at("used").empty()))
 			return current_mem;
 
-		auto &show_swap = Config::getB("show_swap");
+        auto show_swap = Config::getB("show_swap");
-		auto &show_disks = Config::getB("show_disks");
+        auto show_disks = Config::getB("show_disks");
-		auto &swap_disk = Config::getB("swap_disk");
+        auto swap_disk = Config::getB("swap_disk");
 		auto &mem = current_mem;
 		static const bool snapped = (getenv("BTOP_SNAPPED") != NULL);
 
@@ -670,7 +670,7 @@ namespace Mem {
 			double uptime = system_uptime();
 			auto &disks_filter = Config::getS("disks_filter");
 			bool filter_exclude = false;
-			// auto &only_physical = Config::getB("only_physical");
+            // auto only_physical = Config::getB("only_physical");
 			auto &disks = mem.disks;
 			vector<string> filter;
 			if (not disks_filter.empty()) {
@@ -806,8 +806,8 @@ namespace Net {
 	auto collect(const bool no_update) -> net_info & {
 		auto &net = current_net;
 		auto &config_iface = Config::getS("net_iface");
-		auto &net_sync = Config::getB("net_sync");
+        auto net_sync = Config::getB("net_sync");
-		auto &net_auto = Config::getB("net_auto");
+        auto net_auto = Config::getB("net_auto");
 		auto new_timestamp = time_ms();
 
 		if (not no_update and errors < 3) {
@@ -1080,11 +1080,11 @@ namespace Proc {
 	//* Collects and sorts process information from /proc
 	auto collect(const bool no_update) -> vector<proc_info> & {
 		const auto &sorting = Config::getS("proc_sorting");
-		const auto &reverse = Config::getB("proc_reversed");
+        auto reverse = Config::getB("proc_reversed");
 		const auto &filter = Config::getS("proc_filter");
-		const auto &per_core = Config::getB("proc_per_core");
+        auto per_core = Config::getB("proc_per_core");
-		const auto &tree = Config::getB("proc_tree");
+        auto tree = Config::getB("proc_tree");
-		const auto &show_detailed = Config::getB("show_detailed");
+        auto show_detailed = Config::getB("show_detailed");
 		const size_t detailed_pid = Config::getI("detailed_pid");
 		bool should_filter = current_filter != filter;
 		if (should_filter) current_filter = filter;

src/linux/btop_collect.cpp

@@ -1614,12 +1614,12 @@ namespace Proc {
 	//* Collects and sorts process information from /proc
 	auto collect(const bool no_update) -> vector<proc_info>& {
 		const auto& sorting = Config::getS("proc_sorting");
-		const auto& reverse = Config::getB("proc_reversed");
+        auto reverse = Config::getB("proc_reversed");
 		const auto& filter = Config::getS("proc_filter");
-		const auto& per_core = Config::getB("proc_per_core");
+        auto per_core = Config::getB("proc_per_core");
-		const auto& should_filter_kernel = Config::getB("proc_filter_kernel");
+        auto should_filter_kernel = Config::getB("proc_filter_kernel");
-		const auto& tree = Config::getB("proc_tree");
+        auto tree = Config::getB("proc_tree");
-		const auto& show_detailed = Config::getB("show_detailed");
+        auto show_detailed = Config::getB("show_detailed");
 		const size_t detailed_pid = Config::getI("detailed_pid");
 		bool should_filter = current_filter != filter;
 		if (should_filter) current_filter = filter;

src/osx/btop_collect.cpp

@@ -666,9 +666,9 @@ namespace Mem {
 		if (Runner::stopping or (no_update and not current_mem.percent.at("used").empty()))
 			return current_mem;
 
-		auto &show_swap = Config::getB("show_swap");
+        auto show_swap = Config::getB("show_swap");
-		auto &show_disks = Config::getB("show_disks");
+        auto show_disks = Config::getB("show_disks");
-		auto &swap_disk = Config::getB("swap_disk");
+        auto swap_disk = Config::getB("swap_disk");
 		auto &mem = current_mem;
 		static const bool snapped = (getenv("BTOP_SNAPPED") != NULL);
 
@@ -712,7 +712,7 @@ namespace Mem {
 			double uptime = system_uptime();
 			auto &disks_filter = Config::getS("disks_filter");
 			bool filter_exclude = false;
-			// auto &only_physical = Config::getB("only_physical");
+            // auto only_physical = Config::getB("only_physical");
 			auto &disks = mem.disks;
 			vector<string> filter;
 			if (not disks_filter.empty()) {
@@ -845,8 +845,8 @@ namespace Net {
 	auto collect(const bool no_update) -> net_info & {
 		auto &net = current_net;
 		auto &config_iface = Config::getS("net_iface");
-		auto &net_sync = Config::getB("net_sync");
+        auto net_sync = Config::getB("net_sync");
-		auto &net_auto = Config::getB("net_auto");
+        auto net_auto = Config::getB("net_auto");
 		auto new_timestamp = time_ms();
 
 		if (not no_update and errors < 3) {
@@ -1108,11 +1108,11 @@ namespace Proc {
 	//* Collects and sorts process information from /proc
 	auto collect(const bool no_update) -> vector<proc_info> & {
 		const auto &sorting = Config::getS("proc_sorting");
-		const auto &reverse = Config::getB("proc_reversed");
+        auto reverse = Config::getB("proc_reversed");
 		const auto &filter = Config::getS("proc_filter");
-		const auto &per_core = Config::getB("proc_per_core");
+        auto per_core = Config::getB("proc_per_core");
-		const auto &tree = Config::getB("proc_tree");
+        auto tree = Config::getB("proc_tree");
-		const auto &show_detailed = Config::getB("show_detailed");
+        auto show_detailed = Config::getB("show_detailed");
 		const size_t detailed_pid = Config::getI("detailed_pid");
 		bool should_filter = current_filter != filter;
 		if (should_filter) current_filter = filter;