fix: (hopefully) scope the lock so it ends earlier

src/command/join.rs

@@ -129,7 +129,7 @@ impl EventHandler for Handler {
                 tracing::debug!(?voice_tick);
 
                 for (ssrc, voice_data) in &voice_tick.speaking {
-                    let user_id = self.known_ssrcs.lock().unwrap().get_left_for(ssrc).cloned();
+                    let user_id = { self.known_ssrcs.lock().unwrap().get_left_for(ssrc).cloned() };
 
                     tracing::info!(?user_id);