[FFmpeg-cvslog] mp3demux: fix off by 1 error

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Tue May  8 03:45:17 2012 +0200| [f46185c289baf8bf98e8970fb0cbb5f6f56c7837] | committer: Michael Niedermayer

mp3demux: fix off by 1 error

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f46185c289baf8bf98e8970fb0cbb5f6f56c7837
---

 libavformat/mp3dec.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/libavformat/mp3dec.c b/libavformat/mp3dec.c
index edfee16..8d92aec 100644
--- a/libavformat/mp3dec.c
+++ b/libavformat/mp3dec.c
@@ -183,7 +183,7 @@ static int mp3_read_packet(AVFormatContext *s, AVPacket *pkt)
         return AVERROR_EOF;
     }
 
-    if (ret > ID3v1_TAG_SIZE &&
+    if (ret >= ID3v1_TAG_SIZE &&
         memcmp(&pkt->data[ret - ID3v1_TAG_SIZE], "TAG", 3) == 0)
         ret -= ID3v1_TAG_SIZE;