Merge commit '5bf2454e'

* commit '5bf2454e':
  h264dec: support broken files with mp4 extradata/annex b data

This commit is a noop, see 93b89868

The sample pointed out on
https://github.com/HandBrake/HandBrake/issues/339 decodes fine in
FFmpeg.
Merged-by: Clément Bœsch <u@pkh.me>