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zmbv: avoid use of uninitialized data

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Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-11-15 19:15:35 +01:00
parent c2409a7c5b
commit e31b1938ac
1 changed files with 3 additions and 1 deletions
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4
libavcodec/zmbv.c
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@ -493,6 +493,8 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
c->by = (c->height+ c->bh - 1) / c->bh;
if (!c->cur || !c->prev)
return -1;
memset(c->cur, 0, avctx->width * avctx->height * (c->bpp / 8));
memset(c->prev, 0, avctx->width * avctx->height * (c->bpp / 8));
c->decode_intra= decode_intra;
}
@ -633,7 +635,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
/* Allocate decompression buffer */
if (c->decomp_size) {
if ((c->decomp_buf = av_malloc(c->decomp_size)) == NULL) {
if ((c->decomp_buf = av_mallocz(c->decomp_size)) == NULL) {
av_log(avctx, AV_LOG_ERROR,
"Can't allocate decompression buffer.\n");
return AVERROR(ENOMEM);