[tkreuzer] 57325: [WIN32K] Allow passing NULL to EngFreeMem, like on Windows. Fixes mode switching with cirrus driver on qemu. CORE-6335 #resolve

Author: tkreuzer
Date: Tue Sep 18 20:55:15 2012
New Revision: 57325

URL: http://svn.reactos.org/svn/reactos?rev=57325&view=rev
Log:
[WIN32K]
Allow passing NULL to EngFreeMem, like on Windows.
Fixes mode switching with cirrus driver on qemu.
CORE-6335 #resolve

Modified:
    trunk/reactos/win32ss/gdi/eng/mem.c

Modified: trunk/reactos/win32ss/gdi/eng/mem.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/gdi/eng/mem.c?rev=…
==============================================================================
--- trunk/reactos/win32ss/gdi/eng/mem.c [iso-8859-1] (original)
+++ trunk/reactos/win32ss/gdi/eng/mem.c [iso-8859-1] Tue Sep 18 20:55:15 2012
@@ -44,7 +44,11 @@
 APIENTRY
 EngFreeMem(PVOID pvBaseAddress)
 {
-    ExFreePool(pvBaseAddress);
+    /* Windows allows to pass NULL */
+    if (pvBaseAddress)
+    {
+        ExFreePool(pvBaseAddress);
+    }
 }
 
 /*