[FFmpeg-cvslog] libnut: Check nut_demuxer_init() return value.

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Wed Dec  7 23:35:21 2011 +0100| [e21f8a07ca29c6c9328bf59a5ca14087c52c67c3] | committer: Michael Niedermayer

libnut: Check nut_demuxer_init() return value.

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e21f8a07ca29c6c9328bf59a5ca14087c52c67c3
---

 libavformat/libnut.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/libavformat/libnut.c b/libavformat/libnut.c
index 9f64544..be0328a 100644
--- a/libavformat/libnut.c
+++ b/libavformat/libnut.c
@@ -207,6 +207,9 @@ static int nut_read_header(AVFormatContext * avf, AVFormatParameters * ap) {
     nut_stream_header_tt * s;
     int ret, i;
 
+    if(!nut)
+        return -1;
+
     if ((ret = nut_read_headers(nut, &s, NULL))) {
         av_log(avf, AV_LOG_ERROR, " NUT error: %s\n", nut_error(ret));
         nut_demuxer_uninit(nut);