Merge "RTSP: correctly discard stale access unit after seeking." into nyc-dev
am: 505abca79e

* commit '505abca79edc7e5e4fcf308ea08745128658ae6d':
  RTSP: correctly discard stale access unit after seeking.

Change-Id: Ic3fcf038963ed1511ecff9e7bca6ef2dfd3522d9