avformat/subviewerdec: 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@gmail.com>

diff --git a/libavformat/subviewerdec.c b/libavformat/subviewerdec.c
index 83378eab5f91047bf76f22d7997cbedf37537fe6..fdca3a48205dfecc453d9c9d4c65c376f5095b12 100644 (file)
--- a/libavformat/subviewerdec.c
+++ b/libavformat/subviewerdec.c
@@ -172,6 +172,8 @@ static int subviewer_read_header(AVFormatContext *s)
     ff_subtitles_queue_finalize(s, &subviewer->q);
 
 end:
+    if (res < 0)
+        ff_subtitles_queue_clean(&subviewer->q);
     av_bprint_finalize(&header, NULL);
     return res;
 }