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, 1 insertions, 3 deletions

diff --git a/libavformat/vpk.c b/libavformat/vpk.c
index 255d6030b0..dd9aeb6101 100644
--- a/libavformat/vpk.c
+++ b/libavformat/vpk.c
@@ -93,9 +93,7 @@ static int vpk_read_packet(AVFormatContext *s, AVPacket *pkt)
             ret = avio_read(s->pb, pkt->data + i * size, size);
             avio_skip(s->pb, skip);
             if (ret != size) {
-                av_packet_unref(pkt);
-                ret = AVERROR(EIO);
-                break;
+                return AVERROR(EIO);
             }
         }
         pkt->stream_index = 0;