avformat: Remove unnecessary av_packet_unref()

Since bae8844e the packet will always be unreferenced when a demuxer
returns an error, so that a lot of calls to av_packet_unref() in lots of
demuxers are now redundant and can be removed.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: Marton Balint <cus@passwd.hu>

1 files changed, 0 insertions, 1 deletions

diff --git a/libavformat/siff.c b/libavformat/siff.c
index 56c5b33c76..f6815b2f26 100644
--- a/libavformat/siff.c
+++ b/libavformat/siff.c
@@ -220,7 +220,6 @@ static int siff_read_packet(AVFormatContext *s, AVPacket *pkt)
             if (c->gmcsize)
                 memcpy(pkt->data + 2, c->gmc, c->gmcsize);
             if (avio_read(s->pb, pkt->data + 2 + c->gmcsize, size) != size) {
-                av_packet_unref(pkt);
                 return AVERROR_INVALIDDATA;
             }
             pkt->stream_index = 0;