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dri: Fix potential null pointer deference in dri_put_drawable.

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(cherry picked from commit 364070b1f2)
This commit is contained in:
Vinson Lee 2009-11-24 00:57:55 -05:00
parent 76b3523d75
commit f622b649fb
1 changed files with 4 additions and 4 deletions
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8
src/mesa/drivers/dri/common/dri_util.c
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@ -498,11 +498,11 @@ static void dri_put_drawable(__DRIdrawable *pdp)
{
__DRIscreenPrivate *psp;
pdp->refcount--;
if (pdp->refcount)
return;
if (pdp) {
pdp->refcount--;
if (pdp->refcount)
return;
psp = pdp->driScreenPriv;
(*psp->DriverAPI.DestroyBuffer)(pdp);
if (pdp->pClipRects) {