avcodec/vp9_superframe_split_bsf: Discard invalid zero-sized frames

They are invalid in VP9. If any of the frames inside a superframe
had a size of zero, the code would either read into the next frame
or into the superframe index; so check for the length to stop this.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
(cherry picked from commit d20ef30f534151ce749b064034c339562724cc34)

0 files changed, 0 insertions, 0 deletions