Don't return a value from a void function.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5481 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Plugins/Plugin_VideoOGL/Src/cocoaGL.m

@@ -129,7 +129,7 @@ void cocoaGLDeleteWindow(NSWindow *window)
 	[window close];
 	[pool release];
 	
-	return window;
+	return;
 }
 
 void cocoaGLSwap(NSOpenGLContext *ctx,NSWindow *window)

Source/Plugins/Plugin_VideoSoftware/Src/cocoaGL.m

@@ -129,7 +129,7 @@ void cocoaGLDeleteWindow(NSWindow *window)
 	[window close];
 	[pool release];
 	
-	return window;
+	return;
 }
 
 void cocoaGLSwap(NSOpenGLContext *ctx,NSWindow *window)