From cb6e4a12eac70e9dcf3d37706e600c8595ea931b Mon Sep 17 00:00:00 2001
From: Christian Costa <titan.costa@wanadoo.fr>
Date: Sat, 4 Jun 2005 09:37:35 +0000
Subject: [PATCH] Release clock only when one is set.

---
 dlls/quartz/videorenderer.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/dlls/quartz/videorenderer.c b/dlls/quartz/videorenderer.c
index fd738c40c26..e3de4fb6752 100644
--- a/dlls/quartz/videorenderer.c
+++ b/dlls/quartz/videorenderer.c
@@ -422,7 +422,9 @@ static ULONG WINAPI VideoRenderer_Release(IBaseFilter * iface)
     if (!refCount)
     {
         DeleteCriticalSection(&This->csFilter);
-        IReferenceClock_Release(This->pClock);
+
+        if (This->pClock)
+            IReferenceClock_Release(This->pClock);
         
         IPin_Release(This->ppPins[0]);