Andrew Talbot : msvfw32: Avoid possible dereference of NULL pointer ( Coverity).

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 602e6753753ef0e897a9fd7ce46956baca1de510
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=602e6753753ef0e897a9fd7ce46956baca1de510

Author: Andrew Talbot <andrew.talbot at talbotville.com>
Date:   Sat Feb  2 13:36:18 2008 +0000

msvfw32: Avoid possible dereference of NULL pointer (Coverity).

---

 dlls/msvfw32/drawdib.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/dlls/msvfw32/drawdib.c b/dlls/msvfw32/drawdib.c
index 3b30823..137716d 100644
--- a/dlls/msvfw32/drawdib.c
+++ b/dlls/msvfw32/drawdib.c
@@ -133,6 +133,8 @@ BOOL VFWAPI DrawDibEnd(HDRAWDIB hdd)
 
     TRACE("(%p)\n", hdd);
 
+    if (!whdd) return FALSE;
+
     whdd->hpal = 0; /* Do not free this */
     whdd->hdc = 0;
     HeapFree(GetProcessHeap(), 0, whdd->lpbi);