avcodec/msrle: check return code for success before use

The check is possibly redundant, but better to check for errors
that dont occur than to skip the check and crash

Fixes CID1197060

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 754f84663e8b3a88fa2e953b195d59230393fb8d)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-04-06 04:01:24 +02:00
parent 36cab9c408
commit b479b42b26

View File

@ -116,6 +116,9 @@ static int msrle_decode_frame(AVCodecContext *avctx,
uint8_t *buf = avpkt->data + (avctx->height-1)*istride;
int i, j;
if (linesize < 0)
return linesize;
for (i = 0; i < avctx->height; i++) {
if (avctx->bits_per_coded_sample == 4) {
for (j = 0; j < avctx->width - 1; j += 2) {