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-rw-r--r--libavformat/rtspdec.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/libavformat/rtspdec.c b/libavformat/rtspdec.c
index 9306384555..063e82501c 100644
--- a/libavformat/rtspdec.c
+++ b/libavformat/rtspdec.c
@@ -159,8 +159,9 @@ static int rtsp_read_header(AVFormatContext *s)
if (ret)
return ret;
- rt->real_setup_cache = av_mallocz(2 * s->nb_streams * sizeof(*rt->real_setup_cache));
- if (!rt->real_setup_cache)
+ rt->real_setup_cache = !s->nb_streams ? NULL :
+ av_mallocz(2 * s->nb_streams * sizeof(*rt->real_setup_cache));
+ if (!rt->real_setup_cache && s->nb_streams)
return AVERROR(ENOMEM);
rt->real_setup = rt->real_setup_cache + s->nb_streams;