Alexandre Julliard : gdi32: Add missing check for empty visible rects in the non-stretching case.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 72fae39ce0385112fd4f4eb720e19912252103a1
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=72fae39ce0385112fd4f4eb720e19912252103a1

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Thu Dec  8 10:32:26 2011 +0100

gdi32: Add missing check for empty visible rects in the non-stretching case.

---

 dlls/gdi32/bitblt.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/dlls/gdi32/bitblt.c b/dlls/gdi32/bitblt.c
index bfb56a6..abd4dfc 100644
--- a/dlls/gdi32/bitblt.c
+++ b/dlls/gdi32/bitblt.c
@@ -56,7 +56,7 @@ BOOL intersect_vis_rectangles( struct bitblt_coords *dst, struct bitblt_coords *
     if ((src->width == dst->width) && (src->height == dst->height)) /* no stretching */
     {
         offset_rect( &src->visrect, dst->x - src->x, dst->y - src->y );
-        intersect_rect( &rect, &src->visrect, &dst->visrect );
+        if (!intersect_rect( &rect, &src->visrect, &dst->visrect )) return FALSE;
         src->visrect = dst->visrect = rect;
         offset_rect( &src->visrect, src->x - dst->x, src->y - dst->y );
     }