Fix exit code for autoconf

The plugin should always return 0

plugins/torrent/deluge_

@@ -378,7 +378,7 @@ if len(sys.argv) > 1:
     elif action == "autoconf":
         if not successful_import:
             print('no (required modules not found)')
-            sys.exit(1)
+            sys.exit(0)
         print('yes')
     elif action == "suggest":
         for mode in modes: