[FFmpeg-cvslog] avformat/mpeg: add missing check

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Sun Apr  1 21:08:16 2018 +0200| [0995641202741e56874d468fbdacf2f8728535a2] | committer: Paul B Mahol

avformat/mpeg: add missing check

Signed-off-by: Paul B Mahol <onemda at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0995641202741e56874d468fbdacf2f8728535a2
---

 libavformat/mpeg.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavformat/mpeg.c b/libavformat/mpeg.c
index 0c507e9f01..8ae4740920 100644
--- a/libavformat/mpeg.c
+++ b/libavformat/mpeg.c
@@ -456,6 +456,8 @@ redo:
                 startcode = 0x80;
                 m->raw_ac3 = 1;
                 avio_skip(s->pb, -2);
+            } else {
+                avio_skip(s->pb, -1);
             }
         } else {
             len--;