macOS: fixes app termination (#1234)

* fixes app termination

* applies fmt

* fmt all

* updates changelog

* keeps formating consistent

* fixes misstype

CHANGELOG.md

@@ -1,5 +1,7 @@
 # Unreleased
 
+- On macOS, fix application termination on `ControlFlow::Exit`
+
 # 0.20.0 Alpha 4 (2019-10-18)
 
 - Add web support via the 'stdweb' or 'web-sys' features

src/platform_impl/macos/app_state.rs

@@ -275,7 +275,7 @@ impl AppState {
             HANDLER.set_in_callback(false);
         }
         if HANDLER.should_exit() {
-            let _: () = unsafe { msg_send![NSApp(), stop: nil] };
+            let _: () = unsafe { msg_send![NSApp(), terminate: nil] };
             return;
         }
         HANDLER.update_start_time();