ASSERT parameter assumptions in IntEngGradientFill()

reactos/subsys/win32k/eng

diff -u -r1.12 -r1.13
--- gradient.c	12 Dec 2004 21:43:17 -0000	1.12
+++ gradient.c	14 Dec 2004 04:26:49 -0000	1.13
@@ -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: gradient.c,v 1.12 2004/12/12 21:43:17 royce Exp $

+/* $Id: gradient.c,v 1.13 2004/12/14 04:26:49 royce Exp $

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

@@ -528,7 +528,10 @@

     IN ULONG  ulMode)
 {
   BOOL Ret;

-  SURFOBJ *psoDest = &pboDest->SurfObj;

+  SURFOBJ *psoDest;
+  ASSERT(pboDest && psoDest && pco);
+
+  psoDest = &pboDest->SurfObj;

   ASSERT(psoDest);
   
   MouseSafetyOnDrawStart(