Michael Niedermayer:
> Fixes: memleak
> Fixes: 
> 26450/clusterfuzz-testcase-minimized-ffmpeg_dem_FFMETADATA_fuzzer-6249850443923456
> 
> Found-by: continuous fuzzing process 
> https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
> ---
>  libavformat/ffmetadec.c | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/libavformat/ffmetadec.c b/libavformat/ffmetadec.c
> index 0ea89fe3f3..9fcba08490 100644
> --- a/libavformat/ffmetadec.c
> +++ b/libavformat/ffmetadec.c
> @@ -185,7 +185,7 @@ static int read_header(AVFormatContext *s)
>              AVStream *st = avformat_new_stream(s, NULL);
>  
>              if (!st)
> -                return AVERROR(ENOMEM);
> +                goto nomem;
>  
>              st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
>              st->codecpar->codec_id   = AV_CODEC_ID_FFMETADATA;
> @@ -195,7 +195,7 @@ static int read_header(AVFormatContext *s)
>              AVChapter *ch = read_chapter(s);
>  
>              if (!ch)
> -                return AVERROR(ENOMEM);
> +                goto nomem;
>  
>              m = &ch->metadata;
>          } else
> @@ -211,6 +211,10 @@ static int read_header(AVFormatContext *s)
>                                     AV_TIME_BASE_Q);
>  
>      return 0;
> +nomem:
> +    av_bprint_finalize(&bp, NULL);
> +
> +    return AVERROR(ENOMEM);
>  }
>  
>  static int read_packet(AVFormatContext *s, AVPacket *pkt)
> 
LGTM.

- Andreas
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