demux_mkv: don't read index twice

Actually, this never happened, because there's logic for ignoring
duplicate header elements (which includes the seek index). This is
mostly for robustness and readability.

1 files changed, 1 insertions, 1 deletions

diff --git a/demux/demux_mkv.c b/demux/demux_mkv.c
index 0457eca675..89a7d42114 100644
--- a/demux/demux_mkv.c
+++ b/demux/demux_mkv.c
@@ -724,7 +724,7 @@ static int demux_mkv_read_cues(demuxer_t *demuxer)
     mkv_demuxer_t *mkv_d = (mkv_demuxer_t *) demuxer->priv;
     stream_t *s = demuxer->stream;
 
-    if (opts->index_mode != 1) {
+    if (opts->index_mode != 1 || mkv_d->index_complete) {
         ebml_read_skip(demuxer->log, -1, s);
         return 0;
     }