[jimtabor] 34550: - Fix CurrentWnd when it has a NULL, see Bug 3527.

Author: jimtabor
Date: Wed Jul 16 11:12:44 2008
New Revision: 34550

URL: http://svn.reactos.org/svn/reactos?rev=34550&view=rev
Log:
- Fix CurrentWnd when it has a NULL, see Bug 3527.

Modified:
    trunk/reactos/subsystems/win32/win32k/ntuser/vis.c

Modified: trunk/reactos/subsystems/win32/win32k/ntuser/vis.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/nt…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/ntuser/vis.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/ntuser/vis.c [iso-8859-1] Wed Jul 16 11:12:44
2008
@@ -69,7 +69,7 @@
    while (CurrentWindow)
    {
       CurrentWnd = CurrentWindow->Wnd;
-      if (!(CurrentWnd->Style & WS_VISIBLE))
+      if (!(CurrentWnd) || !(CurrentWnd->Style & WS_VISIBLE))
       {
          NtGdiDeleteObject(VisRgn);
          return NULL;