Windows compilation fixes

src/interrupt.rs

@@ -46,7 +46,7 @@ pub fn install_handler<F>(handler: F)
     where F: Fn() + 'static + Send + Sync {
 
     use kernel32::SetConsoleCtrlHandler;
-    use winapi::{BOOL, DWORD, FALSE};
+    use winapi::{BOOL, DWORD, FALSE, TRUE};
 
     pub unsafe extern "system" fn ctrl_handler(_: DWORD) -> BOOL {
         invoke();

src/process.rs

@@ -135,7 +135,7 @@ mod imp {
     }
 
     impl Drop for Process {
-        fn drop(&self) {
+        fn drop(&mut self) {
             unsafe {
                 let _ = CloseHandle(self.job);
             }