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avcodec/movtextenc: Reset array counter after freeing array

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Otherwise the mov_text encoder can segfault when given subtitles with more
than one AVSubtitleRect if one of the first nb_rects - 1 rects contained
a style attribute.

Reviewed-by: Philip Langdale <philipl@overt.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
(cherry picked from commit 8d4431955ccca80933a837e1bc7f44679039335b)
This commit is contained in:
Andreas Rheinhardt 2020-10-16 13:47:56 +02:00
parent bb8d18a39b
commit f4d7dba3ce
1 changed files with 1 additions and 0 deletions
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libavcodec/movtextenc.c
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@ -102,6 +102,7 @@ static void mov_text_cleanup(MovTextContext *s)
av_freep(&s->style_attributes[j]);
}
av_freep(&s->style_attributes);
s->count = 0;
}
if (s->style_attributes_temp) {
*s->style_attributes_temp = s->d;