quartz: Set filesource initial state to stopped.

Fixes a bug valgrind found.

dlls/quartz/filesource.c

diff --git a/dlls/quartz/filesource.c b/dlls/quartz/filesource.c
index ffb5bce..99f8852 100644
--- a/dlls/quartz/filesource.c
+++ b/dlls/quartz/filesource.c
@@ -355,6 +355,7 @@
     pAsyncRead->filterInfo.pGraph = NULL;
     pAsyncRead->pOutputPin = NULL;
     pAsyncRead->lastpinchange = GetTickCount();
+    pAsyncRead->state = State_Stopped;
 
     InitializeCriticalSection(&pAsyncRead->csFilter);
     pAsyncRead->csFilter.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": AsyncReader.csFilter");