[FFmpeg-cvslog] hls: do not allow fallback to generic seeking

[wm4]

ffmpeg | branch: master | wm4 <nfxjfg at googlemail.com> | Wed Jan 24 07:58:52 2018 +0100| [637dfa39421c2806616d1aa454c9182db1aac3d9] | committer: wm4

hls: do not allow fallback to generic seeking

This makes little sense due to how HLS works, and only causes some
additional annoyances if the HLS read_seek function fails (for example
if it's a live stream). It was most likely unintended.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=637dfa39421c2806616d1aa454c9182db1aac3d9
---

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

diff --git a/libavformat/hls.c b/libavformat/hls.c
index 950cc4c3bd..ff7bdecc93 100644
--- a/libavformat/hls.c
+++ b/libavformat/hls.c
@@ -2333,6 +2333,7 @@ AVInputFormat ff_hls_demuxer = {
     .long_name      = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
     .priv_class     = &hls_class,
     .priv_data_size = sizeof(HLSContext),
+    .flags          = AVFMT_NOGENSEARCH,
     .read_probe     = hls_probe,
     .read_header    = hls_read_header,
     .read_packet    = hls_read_packet,