multiqueue: Fix set/get property
multiqueue: Fix set/get property

Blame it on the rebasing :)

centricular/gstreamer,centricular/gstreamer,centricular/gstreamer,jpxiong/gstreamer,jpxiong/gstreamer,jpxiong/gstreamer,jpxiong/gstreamer,centricular/gstreamer,StreamUtils/gstreamer,StreamUtils/gstreamer,StreamUtils/gstreamer,StreamUtils/gstreamer,StreamUtils/gstreamer,jpxiong/gstreamer,centricular/gstreamer