[FFmpeg-cvslog] avformat/udp: add memory alloc checks

[Limin Wang]

ffmpeg | branch: master | Limin Wang <lance.lmwang at gmail.com> | Thu Jan  7 18:22:07 2021 +0800| [5ef20244de8bf5f3d208041c43d9f082e1fb879e] | committer: Limin Wang

avformat/udp: add memory alloc checks

Reviewed-by: Marton Balint <cus at passwd.hu>
Signed-off-by: Limin Wang <lance.lmwang at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=5ef20244de8bf5f3d208041c43d9f082e1fb879e
---

 libavformat/udp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavformat/udp.c b/libavformat/udp.c
index c4e403bbfc..9b9d3de197 100644
--- a/libavformat/udp.c
+++ b/libavformat/udp.c
@@ -903,6 +903,10 @@ static int udp_open(URLContext *h, const char *uri, int flags)
     if ((!is_output && s->circular_buffer_size) || (is_output && s->bitrate && s->circular_buffer_size)) {
         /* start the task going */
         s->fifo = av_fifo_alloc(s->circular_buffer_size);
+        if (!s->fifo) {
+            ret = AVERROR(ENOMEM);
+            goto fail;
+        }
         ret = pthread_mutex_init(&s->mutex, NULL);
         if (ret != 0) {
             av_log(h, AV_LOG_ERROR, "pthread_mutex_init failed : %s\n", strerror(ret));