[tkreuzer] 56543: [WIN32K] Fix crashes due to CreateDIBitmap tests

Author: tkreuzer
Date: Tue May  8 16:21:27 2012
New Revision: 56543

URL: http://svn.reactos.org/svn/reactos?rev=56543&view=rev
Log:
[WIN32K]
Fix crashes due to CreateDIBitmap tests

Modified:
    trunk/reactos/win32ss/gdi/ntgdi/dibobj.c

Modified: trunk/reactos/win32ss/gdi/ntgdi/dibobj.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/gdi/ntgdi/dibobj.c?...
==============================================================================
--- trunk/reactos/win32ss/gdi/ntgdi/dibobj.c [iso-8859-1] (original)
+++ trunk/reactos/win32ss/gdi/ntgdi/dibobj.c [iso-8859-1] Tue May  8 16:21:27 2012
@@ -406,6 +406,8 @@
     POINTL		ptSrc;
     EXLATEOBJ	exlo;
     PPALETTE    ppalDIB = 0;
+
+    if (!bmi) return 0;

SourceBitmap = GreCreateBitmapEx(bmi->bmiHeader.biWidth,
                                      ScanLines,
@@ -1380,6 +1382,7 @@

if(pjInit && (fInit == CBM_INIT))
     {
+        if (cjMaxBits == 0) return NULL;
         safeBits = ExAllocatePoolWithTag(PagedPool, cjMaxBits, TAG_DIB);
         if(!safeBits)
         {