gdiplus: Account for world transform in GdipGraphicsClear.

dlls/gdiplus/graphics.c

@@ -4382,7 +4382,7 @@ GpStatus WINGDIPAPI GdipGraphicsClear(GpGraphics *graphics, ARGB color)
     if((stat = GdipCreateSolidFill(color, &brush)) != Ok)
         return stat;
 
-    if((stat = get_graphics_bounds(graphics, &wnd_rect)) != Ok){
+    if((stat = GdipGetVisibleClipBounds(graphics, &wnd_rect)) != Ok){
         GdipDeleteBrush((GpBrush*)brush);
         return stat;
     }