Wrong MF_MT_AUDIO_CHANNEL_MASK -> channel-mask conversion

[Nikolay Sivov]

wine/dlls/winegstreamer/mfplat.c

Lines 1527 to 1530 in ed8e273

 if (SUCCEEDED(IMFMediaType_GetUINT32(type, &MF_MT_AUDIO_CHANNEL_MASK, &channel_mask))) 
 { 
     gst_caps_set_simple(output, "channel-mask", GST_TYPE_BITMASK, channel_mask, NULL); 
 } 

This should be using 64bit int, because it's GST_TYPE_BITMASK. Otherwise gst_caps_set_simple() crashes for me.

[Guy1524]

Thanks, updated.