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matroskadec: avoid potential crash after r23169

Originally committed as revision 23330 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs 2010-05-25 22:55:12 +00:00
parent 344f5c9fb3
commit 37dd235658

View File

@ -1793,7 +1793,7 @@ static int matroska_parse_cluster(MatroskaDemuxContext *matroska)
blocks_list = &cluster.blocks;
blocks = blocks_list->elem;
for (i=0; i<blocks_list->nb_elem; i++)
if (blocks[i].bin.size > 0) {
if (blocks[i].bin.size > 0 && blocks[i].bin.data) {
int is_keyframe = blocks[i].non_simple ? !blocks[i].reference : -1;
res=matroska_parse_block(matroska,
blocks[i].bin.data, blocks[i].bin.size,