Codechange: [OSX] Drain autoreleased objects in each game loop cycle.

src/video/cocoa/cocoa_wnd.mm

@@ -203,6 +203,7 @@ bool CocoaSetupApplication()
 	}
 
 	/* Become the front process, important when start from the command line. */
+	[ [ NSApplication sharedApplication ] setActivationPolicy:NSApplicationActivationPolicyRegular ];
 	[ [ NSApplication sharedApplication ] activateIgnoringOtherApps:YES ];
 
 	/* Set up the menubar */
@@ -247,6 +248,7 @@ void CocoaDialog(const char *title, const char *message, const char *buttonLabel
 		return;
 	}
 
+	@autoreleasepool {
 		NSAlert *alert = [ [ NSAlert alloc ] init ];
 		[ alert setAlertStyle: NSCriticalAlertStyle ];
 		[ alert setMessageText:[ NSString stringWithUTF8String:title ] ];
@@ -254,8 +256,9 @@ void CocoaDialog(const char *title, const char *message, const char *buttonLabel
 		[ alert addButtonWithTitle: [ NSString stringWithUTF8String:buttonLabel ] ];
 		[ alert runModal ];
 		[ alert release ];
+	}
 
-	if (!wasstarted && VideoDriver::GetInstance() != NULL) VideoDriver::GetInstance()->Stop();
+	if (!wasstarted && VideoDriver::GetInstance() != nullptr) VideoDriver::GetInstance()->Stop();
 
 	_cocoa_video_dialog = false;
 }

src/video/cocoa/event.mm

@@ -609,6 +609,8 @@ void VideoDriver_Cocoa::GameLoop()
 	this->Draw(true);
 
 	for (;;) {
+		@autoreleasepool {
+
 			uint32 prev_cur_ticks = cur_ticks; // to check for wrapping
 			InteractiveRandom(); // randomness
 
@@ -662,6 +664,7 @@ void VideoDriver_Cocoa::GameLoop()
 				this->Draw();
 			}
 		}
+	}
 
 #ifdef _DEBUG
 	uint32 et = GetTick();