[PATCH 2/6] mf/samplegrabber: Implement ::ShutdownObject for sample grabber actvation object.

[Derek Lesho]

Signed-off-by: Derek Lesho 
---
 dlls/mf/samplegrabber.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/dlls/mf/samplegrabber.c b/dlls/mf/samplegrabber.c
index dd48973b7b6..086abcb0f9f 100644
--- a/dlls/mf/samplegrabber.c
+++ b/dlls/mf/samplegrabber.c
@@ -1458,6 +1458,14 @@ failed:
 static void sample_grabber_shutdown_object(void *user_context, IUnknown *obj)
 {
     struct sample_grabber_activate_context *context = user_context;
+    IMFMediaSink *sink;
+
+    if (SUCCEEDED(IUnknown_QueryInterface(obj, &IID_IMFMediaSink, (void **)&sink)))
+    {
+        IMFMediaSink_Shutdown(sink);
+        IMFMediaSink_Release(sink);
+    }
+
     context->shut_down = TRUE;
 }