[FFmpeg-cvslog] avformat/vplayerdec: Fix memleak upon read header failure

[Andreas Rheinhardt]

ffmpeg | branch: release/4.2 | Andreas Rheinhardt <andreas.rheinhardt at gmail.com> | Sun Jun 14 03:28:56 2020 +0200| [4cfc3e8a1523e05c1e4c68ac51237dcebdec8fd3] | committer: Andreas Rheinhardt

avformat/vplayerdec: Fix memleak upon read header failure

The already parsed subtitles (contained in an FFDemuxSubtitlesQueue)
would leak if an error happened upon reading a subsequent subtitle.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at gmail.com>
(cherry picked from commit 67434afa7fcb2b411b10a4d09fb30cd3a5907c2c)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4cfc3e8a1523e05c1e4c68ac51237dcebdec8fd3
---

 libavformat/vplayerdec.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libavformat/vplayerdec.c b/libavformat/vplayerdec.c
index e3e7b4efb8..ca23ec76ac 100644
--- a/libavformat/vplayerdec.c
+++ b/libavformat/vplayerdec.c
@@ -83,8 +83,10 @@ static int vplayer_read_header(AVFormatContext *s)
             AVPacket *sub;
 
             sub = ff_subtitles_queue_insert(&vplayer->q, p, strlen(p), 0);
-            if (!sub)
+            if (!sub) {
+                ff_subtitles_queue_clean(&vplayer->q);
                 return AVERROR(ENOMEM);
+            }
             sub->pos = pos;
             sub->pts = pts_start;
             sub->duration = -1;