[FFmpeg-cvslog] avformat/subfile: Assert that whence is a known case

[Michael Niedermayer]

ffmpeg | branch: release/4.3 | Michael Niedermayer <michael at niedermayer.cc> | Sat Jun  8 20:46:28 2024 +0200| [3174e73cc53946596bd5bcec9793d55631e53143] | committer: Michael Niedermayer

avformat/subfile: Assert that whence is a known case

This may help CID1452449 Uninitialized scalar variable

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 426d8c84c37064eef93bbcfaffd886d00a9a4ee8)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=3174e73cc53946596bd5bcec9793d55631e53143
---

 libavformat/subfile.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavformat/subfile.c b/libavformat/subfile.c
index 68d846ab15..e6712806a9 100644
--- a/libavformat/subfile.c
+++ b/libavformat/subfile.c
@@ -137,6 +137,8 @@ static int64_t subfile_seek(URLContext *h, int64_t pos, int whence)
     case SEEK_END:
         new_pos = end + pos;
         break;
+    default:
+        av_assert0(0);
     }
     if (new_pos < c->start)
         return AVERROR(EINVAL);