refine the hls dispose, when not cycle always dispose it.

@@ -1164,14 +1164,6 @@ void SrsHls::dispose()
         on_unpublish();
     }
     
-    // only dispose hls when positive.
-    if (_req) {
-        int hls_dispose = _srs_config->get_hls_dispose(_req->vhost);
-        if (hls_dispose <= 0) {
-            return;
-        }
-    }
-    
     muxer->dispose();
 }
 

@@ -1472,7 +1472,7 @@ int SrsSource::on_audio(SrsCommonMessage* shared_audio)
     if (!mix_correct && is_monotonically_increase) {
         if (last_packet_time > 0 && shared_audio->header.timestamp < last_packet_time) {
             is_monotonically_increase = false;
-            srs_warn("stream not monotonically increase, please open mix_correct.");
+            srs_warn("AUTIO: stream not monotonically increase, please open mix_correct.");
         }
     }
     last_packet_time = shared_audio->header.timestamp;
@@ -1663,7 +1663,7 @@ int SrsSource::on_video(SrsCommonMessage* shared_video)
     if (!mix_correct && is_monotonically_increase) {
         if (last_packet_time > 0 && shared_video->header.timestamp < last_packet_time) {
             is_monotonically_increase = false;
-            srs_warn("stream not monotonically increase, please open mix_correct.");
+            srs_warn("VIDEO: stream not monotonically increase, please open mix_correct.");
         }
     }
     last_packet_time = shared_video->header.timestamp;