opus_parser: fix leaking channel_maps on error

Make ff_opus_parse_extradata free allocated memory on error instead of
expecting callers to free it in that case.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/libavcodec/opus.c b/libavcodec/opus.c
index 08d94b6cba..1eeb92c5bd 100644
--- a/libavcodec/opus.c
+++ b/libavcodec/opus.c
@@ -403,6 +403,7 @@ av_cold int ff_opus_parse_extradata(AVCodecContext *avctx,
         } else if (idx >= streams + stereo_streams) {
             av_log(avctx, AV_LOG_ERROR,
                    "Invalid channel map for output channel %d: %d\n", i, idx);
+            av_freep(&s->channel_maps);
             return AVERROR_INVALIDDATA;
         }