[jimtabor] 66177: [Win32ss] - Validate the parent window before locking it. Attempt to fix CORE-9117.

Author: jimtabor
Date: Thu Feb  5 23:46:57 2015
New Revision: 66177

URL: http://svn.reactos.org/svn/reactos?rev=66177&view=rev
Log:
[Win32ss]
- Validate the parent window before locking it. Attempt to fix CORE-9117.

Modified:
    trunk/reactos/win32ss/user/ntuser/window.c

Modified: trunk/reactos/win32ss/user/ntuser/window.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/user/ntuser/window....
==============================================================================
--- trunk/reactos/win32ss/user/ntuser/window.c	[iso-8859-1] (original)
+++ trunk/reactos/win32ss/user/ntuser/window.c	[iso-8859-1] Thu Feb  5 23:46:57 2015
@@ -1473,7 +1473,7 @@
     if ( (pWindow->style & (WS_CHILD | WS_POPUP)) == WS_CHILD &&
          !(pWindow->style & WS_EX_NOPARENTNOTIFY))
     {
-        if (pWindow->spwndParent && pWindow->spwndParent != UserGetDesktopWindow())
+        if (VerifyWnd(pWindow->spwndParent) && pWindow->spwndParent != UserGetDesktopWindow())
         {
             USER_REFERENCE_ENTRY Ref;
             UserRefObjectCo(pWindow->spwndParent, &Ref);