[FFmpeg-cvslog] avformat/matroskaenc: Fix memleak upon encountering bogus chapter

[Andreas Rheinhardt]

ffmpeg | branch: release/4.2 | Andreas Rheinhardt <andreas.rheinhardt at gmail.com> | Mon Apr 27 05:42:09 2020 +0200| [2dc4034c5a9a40738953697c8fe88a54c7c682a7] | committer: Andreas Rheinhardt

avformat/matroskaenc: Fix memleak upon encountering bogus chapter

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at gmail.com>
(cherry picked from commit cb255b616cf1ebc6bc89b3538b6b7465dc2c526b)

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2dc4034c5a9a40738953697c8fe88a54c7c682a7
---

 libavformat/matroskaenc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
index 8db5d892bb..ce42ce7cc8 100644
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@@ -1508,6 +1508,7 @@ static int mkv_write_chapters(AVFormatContext *s)
             av_log(s, AV_LOG_ERROR,
                    "Invalid chapter start (%"PRId64") or end (%"PRId64").\n",
                    chapterstart, chapterend);
+            ffio_free_dyn_buf(&dyn_cp);
             return AVERROR_INVALIDDATA;
         }