Flush message queue when shutting down video mode on Windows

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40443

src/video/windib/SDL_dibvideo.c

@@ -889,6 +889,16 @@ int DIB_GetGammaRamp(_THIS, Uint16 *ramp)
 #endif /* !NO_GAMMA_SUPPORT */
 }
 
+static void FlushMessageQueue()
+{
+	MSG  msg;
+	while ( PeekMessage(&msg, NULL, 0, 0, PM_REMOVE) ) {
+		if ( msg.message == WM_QUIT ) break;
+		TranslateMessage( &msg );
+		DispatchMessage( &msg );
+	}
+}
+
 void DIB_VideoQuit(_THIS)
 {
 	/* Destroy the window and everything associated with it */
@@ -918,6 +928,7 @@ void DIB_VideoQuit(_THIS)
 		}
 		DIB_QuitGamma(this);
 		DIB_DestroyWindow(this);
+		FlushMessageQueue();
 
 		SDL_Window = NULL;
 	}

src/video/windx5/SDL_dx5video.c

@@ -2205,6 +2205,16 @@ static int DX5_GetGammaRamp(_THIS, Uint16 *ramp)
 #endif /* !IDirectDrawGammaControl_SetGammaRamp */
 }
 
+static void FlushMessageQueue()
+{
+	MSG  msg;
+	while ( PeekMessage(&msg, NULL, 0, 0, PM_REMOVE) ) {
+		if ( msg.message == WM_QUIT ) break;
+		TranslateMessage( &msg );
+		DispatchMessage( &msg );
+	}
+}
+
 void DX5_VideoQuit(_THIS)
 {
 	int i, j;
@@ -2246,6 +2256,7 @@ void DX5_VideoQuit(_THIS)
 	DIB_QuitGamma(this);
 	if ( SDL_Window ) {
 		DX5_DestroyWindow(this);
+		FlushMessageQueue();
 	}
 
 	/* Free our window icon */