smooth: remove write-only variable

modules/stream_filter/smooth/downloader.c

@@ -489,10 +489,7 @@ static int Download( stream_t *s, sms_stream_t *sms )
     if( sms->p_chunks == NULL || sms->p_chunks == sms->p_lastchunk )
         return VLC_SUCCESS;
 
-    vlc_mutex_lock( &p_sys->playback.lock );
-    p_sys->playback.b_underrun = false;
     bw_stats_underrun( sms );
-    vlc_mutex_unlock( &p_sys->playback.lock );
 
     quality_level_t *new_qlevel = BandwidthAdaptation( s, sms, sms->i_obw,
                                                        duration );

modules/stream_filter/smooth/smooth.c

@@ -690,9 +690,6 @@ static chunk_t *get_chunk( stream_t *s, const bool wait, bool *pb_isinit )
         }
 
         msg_Dbg( s, "get_chunk is waiting for chunk %"PRId64"!!!", p_chunk->start_time );
-        vlc_mutex_lock( &p_sys->playback.lock );
-        p_sys->playback.b_underrun = true;
-        vlc_mutex_unlock( &p_sys->playback.lock );
         vlc_cond_timedwait( &p_sys->playback.wait,
                 &p_sys->p_current_stream->chunks_lock, mdate() + CLOCK_FREQ/2 );
     }

modules/stream_filter/smooth/smooth.h

@@ -133,7 +133,6 @@ struct stream_sys_t
         } init;
         vlc_mutex_t lock;
         vlc_cond_t  wait;         /* some condition to wait on */
-        bool        b_underrun;   /* did we ran out of data recently */
     } playback;
 
     /* state */