[FFmpeg-cvslog] avformat/sapdec: Check ffurl_get_file_handle() for error

[Michael Niedermayer]

ffmpeg | branch: release/4.3 | Michael Niedermayer <michael at niedermayer.cc> | Thu Jul 11 20:44:45 2024 +0200| [aa3cdc085d0965f665817ada2fde2bc940d8d70f] | committer: Michael Niedermayer

avformat/sapdec: Check ffurl_get_file_handle() for error

Fixes: CID1604506 Overflowed constant

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 3e305a0e703843765d4dd7042092c3a38c0f97af)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=aa3cdc085d0965f665817ada2fde2bc940d8d70f
---

 libavformat/sapdec.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavformat/sapdec.c b/libavformat/sapdec.c
index eec73aa2f4..ef60a1272b 100644
--- a/libavformat/sapdec.c
+++ b/libavformat/sapdec.c
@@ -198,6 +198,9 @@ static int sap_fetch_packet(AVFormatContext *s, AVPacket *pkt)
     struct pollfd p = {fd, POLLIN, 0};
     uint8_t recvbuf[RTP_MAX_PACKET_LENGTH];
 
+    if (fd < 0)
+        return fd;
+
     if (sap->eof)
         return AVERROR_EOF;