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, 4 deletions

diff --git a/libavformat/spdifdec.c b/libavformat/spdifdec.c
index d74f58d82b..1808fa9d65 100644
--- a/libavformat/spdifdec.c
+++ b/libavformat/spdifdec.c
@@ -197,15 +197,13 @@ int ff_spdif_read_packet(AVFormatContext *s, AVPacket *pkt)
     pkt->pos = avio_tell(pb) - BURST_HEADER_SIZE;
 
     if (avio_read(pb, pkt->data, pkt->size) < pkt->size) {
-        av_packet_unref(pkt);
         return AVERROR_EOF;
     }
     ff_spdif_bswap_buf16((uint16_t *)pkt->data, (uint16_t *)pkt->data, pkt->size >> 1);
 
     ret = spdif_get_offset_and_codec(s, data_type, pkt->data,
                                      &offset, &codec_id);
-    if (ret) {
-        av_packet_unref(pkt);
+    if (ret < 0) {
         return ret;
     }
 
@@ -216,7 +214,6 @@ int ff_spdif_read_packet(AVFormatContext *s, AVPacket *pkt)
         /* first packet, create a stream */
         AVStream *st = avformat_new_stream(s, NULL);
         if (!st) {
-            av_packet_unref(pkt);
             return AVERROR(ENOMEM);
         }
         st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;