MKV: change debug message

No need to call stream_Size and divide by 0

modules/demux/mkv/matroska_segment.cpp

@@ -915,8 +915,7 @@ void matroska_segment_c::Seek( mtime_t i_date, mtime_t i_time_offset, int64_t i_
         i_seek_time = p_indexes[i_idx].i_time;
     }
 
-    msg_Dbg( &sys.demuxer, "seek got %"PRId64" (%d%%)",
-                i_seek_time, (int)( 100 * i_seek_position / stream_Size( sys.demuxer.s ) ) );
+    msg_Dbg( &sys.demuxer, "seek got %"PRId64" - %"PRId64, i_seek_time, i_seek_position );
 
     es.I_O().setFilePointer( i_seek_position, seek_beginning );