Files
ffmpeg/libavformat
Andreas Rheinhardt 4e7e2e1bd3 avformat/tedcaptionsdec: Fix leak of AVBPrint upon error
The tedcaptions demuxer uses an AVBPrint whose string is not restricted
to its internal buffer; it therefore needs to be cleaned up, yet this is
not done on error, as parse_file() returned simply returned directly.
This is fixed by going to fail first in such cases.
Furthermore, there is also a second way how this string can leak: By
having more than one subtitle per subtitle block, as the new one simply
overwrites the old one in this case as the AVBPrint is initialized each
time upon encountering a subtitle line. The code has been modified to
simply append the new subtitle to the old one, so that the old one can't
leak any more.

Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
(cherry picked from commit 9f7e592df2)
2021-02-27 07:20:58 +01:00
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