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avcodec/movtextdec: check that ftab has been allocated before dereferencing it

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Fixes potential null pointer dereference on deallocation

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2015-08-06 22:40:01 +02:00
parent 2e7a684e72
commit ae413a48e6
1 changed files with 5 additions and 3 deletions
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8
libavcodec/movtextdec.c
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@ -93,9 +93,11 @@ static void mov_text_cleanup(MovTextContext *m)
static void mov_text_cleanup_ftab(MovTextContext *m) static void mov_text_cleanup_ftab(MovTextContext *m)
{ {
int i; int i;
for(i = 0; i < m->count_f; i++) { if (m->ftab) {
av_freep(&m->ftab[i]->font); for(i = 0; i < m->count_f; i++) {
av_freep(&m->ftab[i]); av_freep(&m->ftab[i]->font);
av_freep(&m->ftab[i]);
}
} }
av_freep(&m->ftab); av_freep(&m->ftab);
} }