rtpenc_chain: Return an error code instead of just a plain pointer

Also check the return value in sapenc.

Signed-off-by: Martin Storsjö <martin@martin.st>

1 files changed, 4 insertions, 2 deletions

diff --git a/libavformat/sapenc.c b/libavformat/sapenc.c
index 0c3e95edd6..7e84a3fb99 100644
--- a/libavformat/sapenc.c
+++ b/libavformat/sapenc.c
@@ -150,8 +150,10 @@ static int sap_write_header(AVFormatContext *s)
             ret = AVERROR(EIO);
             goto fail;
         }
-        s->streams[i]->priv_data = contexts[i] =
-            ff_rtp_chain_mux_open(s, s->streams[i], fd, 0);
+        ret = ff_rtp_chain_mux_open(&contexts[i], s, s->streams[i], fd, 0);
+        if (ret < 0)
+            goto fail;
+        s->streams[i]->priv_data = contexts[i];
         av_strlcpy(contexts[i]->filename, url, sizeof(contexts[i]->filename));
     }