Quartz target: set x and y field of mode list to 0 in SDL_ListMode call.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401221

src/video/quartz/SDL_QuartzVideo.m

@@ -300,6 +300,7 @@ static SDL_Rect** QZ_ListModes (_THIS, SDL_PixelFormat *format, Uint32 flags) {
                     return NULL;
                 }
 
+                rect->x = rect->y = 0;
                 rect->w = width;
                 rect->h = height;