[FFmpeg-cvslog] avformat/utils: Clear pointer in ff_alloc_extradata() to avoid leaving a stale pointer in memory

[Michael Niedermayer]

ffmpeg | branch: release/2.4 | Michael Niedermayer <michaelni at gmx.at> | Tue Jan  6 12:53:53 2015 +0100| [45069582897c0b59ec7c2ffd0f933b9fc3c2926e] | committer: Michael Niedermayer

avformat/utils: Clear pointer in ff_alloc_extradata() to avoid leaving a stale pointer in memory

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit bbfca8e84b0e69abba523d665536c0135fc1c00e)

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=45069582897c0b59ec7c2ffd0f933b9fc3c2926e
---

 libavformat/utils.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/libavformat/utils.c b/libavformat/utils.c
index 6ff4570..b1f7909 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -2792,6 +2792,7 @@ int ff_alloc_extradata(AVCodecContext *avctx, int size)
     int ret;
 
     if (size < 0 || size >= INT32_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
+        avctx->extradata = NULL;
         avctx->extradata_size = 0;
         return AVERROR(EINVAL);
     }