ASSERT parameter assumptions in IntEngStretchBlt() and IntEngMaskBlt()

reactos/subsys/win32k/eng

diff -u -r1.63 -r1.64
--- bitblt.c	14 Dec 2004 03:28:34 -0000	1.63
+++ bitblt.c	14 Dec 2004 03:36:46 -0000	1.64
@@ -16,7 +16,7 @@

  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */

-/* $Id: bitblt.c,v 1.63 2004/12/14 03:28:34 royce Exp $

+/* $Id: bitblt.c,v 1.64 2004/12/14 03:36:46 royce Exp $

  *
  * COPYRIGHT:        See COPYING in the top level directory
  * PROJECT:          ReactOS kernel

@@ -746,23 +746,29 @@

   BOOLEAN ret;
   COLORADJUSTMENT ca;
   POINT MaskOrigin;

-  SURFOBJ *DestSurf = &DestObj->SurfObj;

+  SURFOBJ *DestSurf;

   SURFOBJ *SourceSurf = SourceObj ? &SourceObj->SurfObj : NULL;
   SURFOBJ *MaskSurf = MaskObj ? &MaskObj->SurfObj : NULL;
 

+  ASSERT(DestObj);
+  DestSurf = &DestObj->SurfObj;
+  ASSERT(DestSurf);
+

   if (pMaskOrigin != NULL)
     {
       MaskOrigin.x = pMaskOrigin->x; MaskOrigin.y = pMaskOrigin->y;
     }
 

-  if (NULL != SourceObj)

+  if (NULL != SourceSurf)

     {

+    ASSERT(SourceRect);

     MouseSafetyOnDrawStart(SourceSurf, SourceRect->left, SourceRect->top,
                            SourceRect->right, SourceRect->bottom);
     }
 
   /* No success yet */
   ret = FALSE;

+  ASSERT(DestRect);

   MouseSafetyOnDrawStart(DestSurf, DestRect->left, DestRect->top,
                          DestRect->right, DestRect->bottom);
 

@@ -1109,6 +1115,7 @@

 
   /* No success yet */
   ret = FALSE;

+  ASSERT(DestObj);

   MouseSafetyOnDrawStart(DestObj, OutputRect.left, OutputRect.top,
                          OutputRect.right, OutputRect.bottom);