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exa: check for NULL pointer before dereferences it

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Signed-off-by: Tiago Vignatti <tiago.vignatti@nokia.com>
Acked-by: Michel Dänzer <michel@daenzer.net>
Reviewed-by: Dan Nicholson <dbn.lists@gmail.com>
This commit is contained in:
Tiago Vignatti
2010-04-16 17:50:43 +03:00
parent 996c115deb
commit 49835eec0c
3 changed files with 6 additions and 3 deletions
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3
exa/exa_classic.c
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@@ -148,7 +148,7 @@ Bool
exaModifyPixmapHeader_classic(PixmapPtr pPixmap, int width, int height, int depth,
int bitsPerPixel, int devKind, pointer pPixData)
{
ScreenPtr pScreen = pPixmap->drawable.pScreen;
ScreenPtr pScreen;
ExaScreenPrivPtr pExaScr;
ExaPixmapPrivPtr pExaPixmap;
Bool ret;
@@ -156,6 +156,7 @@ exaModifyPixmapHeader_classic(PixmapPtr pPixmap, int width, int height, int dept
if (!pPixmap)
return FALSE;
pScreen = pPixmap->drawable.pScreen;
pExaScr = ExaGetScreenPriv(pScreen);
pExaPixmap = ExaGetPixmapPriv(pPixmap);