On Sat, 15 Feb 2020, Paul B Mahol wrote:

Signed-off-by: Paul B Mahol <one...@gmail.com>
---
libavformat/utils.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/libavformat/utils.c b/libavformat/utils.c
index 81ea239a66..ba2621aa28 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -4450,10 +4450,12 @@ void avformat_free_context(AVFormatContext *s)
    if (s->oformat && s->oformat->priv_class && s->priv_data)
        av_opt_free(s->priv_data);

+    if (s->nb_streams)
    for (i = s->nb_streams - 1; i >= 0; i--)

Maybe rewrite the loop instead?
      for (i = s->nb_streams; i-- > 0;)

Regards,
Marton

        ff_free_stream(s, s->streams[i]);


+    if (s->nb_programs)
    for (i = s->nb_programs - 1; i >= 0; i--) {
        av_dict_free(&s->programs[i]->metadata);
        av_freep(&s->programs[i]->stream_index);
--
2.17.1

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