[PATCH] amstream: Initialize correctly AM_MEDIA_TYPE struct.

[Christian Costa]

Fixes bug 32185.
---
 dlls/amstream/mediastreamfilter.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/dlls/amstream/mediastreamfilter.c b/dlls/amstream/mediastreamfilter.c
index 9b2bd8e..d5388e5 100644
--- a/dlls/amstream/mediastreamfilter.c
+++ b/dlls/amstream/mediastreamfilter.c
@@ -132,6 +132,8 @@ static HRESULT WINAPI BasePinImp_GetMediaType(BasePin *This, int index, AM_MEDIA
     MSPID purpose_id;
     int i;
 
+    ZeroMemory(amt, sizeof(*amt));
+
     /* Find which stream is associated with the pin */
     for (i = 0; i < filter->nb_streams; i++)
         if (&This->IPin_iface == filter->pins[i])