opt: remove latency detector on single audio

src/server/connection.rs

@@ -171,6 +171,8 @@ impl Connection {
         let tx_cloned = tx.clone();
         // Start a audio thread to play the audio sent by peer.
         let latency_controller = LatencyController::new();
+        // No video frame will be sent here, so we need to disable latency controller, or audio check may fail.
+        latency_controller.lock().unwrap().set_enabled(false);
         let audio_sender = start_audio_thread(Some(latency_controller));
         let mut conn = Self {
             inner: ConnInner {
@@ -1561,7 +1563,7 @@ impl Connection {
                     _ => {}
                 },
                 Some(message::Union::AudioFrame(frame)) => {
-                    if !self.disable_audio  {
+                    if !self.disable_audio {
                         allow_err!(self.audio_sender.send(MediaData::AudioFrame(frame)));
                     }
                 }