quartz: Fix IEnumMoniker reference leak in FilterGraph2_Connect.

Signed-off-by: Thomas Faber <thomas.faber@reactos.org>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

dlls/quartz/filtergraph.c

@@ -1169,6 +1169,8 @@ error:
         CoTaskMemFree(ppins);
     }
 
+    IEnumMoniker_Release(pEnumMoniker);
+
 out:
     if (penummt)
         IEnumMediaTypes_Release(penummt);