(svn r17793) -Fix: [OSX] The splash image wasn't displayed if the Quartz video driver was used.

src/video/cocoa/wnd_quickdraw.mm

@@ -144,7 +144,7 @@ public:
 	WindowQuickdrawSubdriver(int bpp);
 	virtual ~WindowQuickdrawSubdriver();
 
-	virtual void Draw();
+	virtual void Draw(bool force_update);
 	virtual void MakeDirty(int left, int top, int width, int height);
 	virtual void UpdatePalette(uint first_color, uint num_colors);
 
@@ -547,7 +547,7 @@ WindowQuickdrawSubdriver::~WindowQuickdrawSubdriver()
 	free(this->pixel_buffer);
 }
 
-void WindowQuickdrawSubdriver::Draw()
+void WindowQuickdrawSubdriver::Draw(bool force_update)
 {
 	/* Check if we need to do anything */
 	if (this->num_dirty_rects == 0 || [ this->window isMiniaturized ]) return;