[FFmpeg-cvslog] jpeg2000: Zero prec->cblk

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Thu Jun  6 22:02:54 2013 +0200| [ffb1051b9b9b876aba109d6ae402ab3a50183554] | committer: Michael Niedermayer

jpeg2000: Zero prec->cblk

Prevent use of uninitialized memory / valgrind failure

Found-by: ubitux
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ffb1051b9b9b876aba109d6ae402ab3a50183554
---

 libavcodec/jpeg2000.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/libavcodec/jpeg2000.c b/libavcodec/jpeg2000.c
index a2c3e47..947a745 100644
--- a/libavcodec/jpeg2000.c
+++ b/libavcodec/jpeg2000.c
@@ -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++) {