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jpeg2000: Zero prec->cblk 

Prevent use of uninitialized memory / valgrind failure

Found-by: ubitux
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-06-06 22:02:54 +02:00
parent 7c3a296b4f
commit ffb1051b9b
1 changed files with 3 additions and 3 deletions
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6
libavcodec/jpeg2000.c
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@ -424,9 +424,9 @@ int ff_jpeg2000_init_component(Jpeg2000Component *comp,
if (!prec->zerobits)
return AVERROR(ENOMEM);
prec->cblk = av_malloc_array(prec->nb_codeblocks_width *
(uint64_t)prec->nb_codeblocks_height,
sizeof(*prec->cblk));
prec->cblk = av_mallocz_array(prec->nb_codeblocks_width *
(uint64_t)prec->nb_codeblocks_height,
sizeof(*prec->cblk));
if (!prec->cblk)
return AVERROR(ENOMEM);
for (cblkno = 0; cblkno < prec->nb_codeblocks_width * prec->nb_codeblocks_height; cblkno++) {