quartz: Fixed crash in releasing uninitializes pAlloc and pReader

[Piotr Caban]

Hi,

Changelog:
 - Fixed crash in releasing uninitialized pAlloc and pReader

 dlls/quartz/pin.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

--
Piotr

-------------- next part --------------
diff --git a/dlls/quartz/pin.c b/dlls/quartz/pin.c
index 57dc385..057ca3e 100644
--- a/dlls/quartz/pin.c
+++ b/dlls/quartz/pin.c
@@ -1131,8 +1131,10 @@ ULONG WINAPI PullPin_Release(IPin * ifac
     {
         if (This->hThread)
             PullPin_StopProcessing(This);
-        IMemAllocator_Release(This->pAlloc);
-        IAsyncReader_Release(This->pReader);
+        if(This->pAlloc)
+            IMemAllocator_Release(This->pAlloc);
+        if(This->pReader)
+            IAsyncReader_Release(This->pReader);
         CloseHandle(This->hEventStateChanged);
         CoTaskMemFree(This);
         return 0;