[gschneider] 42866: Check the surface pointer before accessing it to get a handle

Author: gschneider
Date: Sat Aug 22 20:44:17 2009
New Revision: 42866

URL: http://svn.reactos.org/svn/reactos?rev=42866&view=rev
Log:
Check the surface pointer before accessing it to get a handle

Modified:
    trunk/reactos/dll/win32/gdi32/misc/gdientry.c

Modified: trunk/reactos/dll/win32/gdi32/misc/gdientry.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/gdi32/misc/gdien…
==============================================================================
--- trunk/reactos/dll/win32/gdi32/misc/gdientry.c [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/gdi32/misc/gdientry.c [iso-8859-1] Sat Aug 22 20:44:17 2009
@@ -2047,15 +2047,18 @@
               BOOL bRelease)
 {
     HANDLE hDD = NULL;
-    HANDLE hSurface = (HANDLE)pSurface->hDDSurface;
+    HANDLE hSurface = NULL;
 
     /* Check if we already have a surface */
     if (!pSurface)
     {
         /* We don't have one, use the DirectDraw Object handle instead */
-        hSurface = NULL;
         hDD = GetDdHandle(pDDraw->lpGbl->hDD);
-     }
+    }
+    else
+    {
+        hSurface = (HANDLE)pSurface->hDDSurface;
+    }
 
     /* Call the API */
     return (HANDLE)NtGdiDdGetDxHandle(hDD, hSurface, bRelease);