[tkreuzer] 70106: [WIN32K] Apply the same fix for EngAcquireSemaphore to EngReleaseSemaphore. CORE-9779 #comment Yet another try please

Author: tkreuzer
Date: Wed Nov 25 01:55:14 2015
New Revision: 70106

URL: http://svn.reactos.org/svn/reactos?rev=70106&view=rev
Log:
[WIN32K]
Apply the same fix for EngAcquireSemaphore to EngReleaseSemaphore.
CORE-9779 #comment Yet another try please

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

Modified: trunk/reactos/win32ss/gdi/eng/semaphor.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/gdi/eng/semaphor.c…
==============================================================================
--- trunk/reactos/win32ss/gdi/eng/semaphor.c	[iso-8859-1] (original)
+++ trunk/reactos/win32ss/gdi/eng/semaphor.c	[iso-8859-1] Wed Nov 25 01:55:14 2015
@@ -68,7 +68,14 @@
 {
     // www.osr.com/ddk/graphics/gdifncs_5u3r.htm
     PTHREADINFO W32Thread;
-    ASSERT(hsem);
+
+    /* On Windows a NULL hsem is ignored */
+    if (hsem == NULL)
+    {
+        DPRINT1("EngReleaseSemaphore called with hsem == NULL!\n");
+        return;
+    }
+
     W32Thread = PsGetThreadWin32Thread(PsGetCurrentThread());
     if (W32Thread) --W32Thread->dwEngAcquireCount;
     ExReleaseResourceAndLeaveCriticalRegion((PERESOURCE)hsem);