no need to set this to a var

src/common/mainloop.rs

@@ -382,7 +382,7 @@ where
     R: RecvServerPacket + std::fmt::Debug + Send + Sync + 'static,
     E: std::fmt::Debug + Send,
 {
-    let listener = async_std::task::spawn(async move {
+    async_std::task::spawn(async move {
         let listener = async_std::net::TcpListener::bind(&std::net::SocketAddr::from((std::net::Ipv4Addr::new(0,0,0,0), client_port))).await.unwrap();
         let mut id = 1;
 
@@ -405,9 +405,7 @@ where
             client_recv_loop(client_id, socket.clone(), cipher_in.clone(), server_state_sender.clone(), client_sender).await;
             client_send_loop(client_id, socket.clone(), cipher_in.clone(), cipher_out.clone(), client_receiver).await;
         }
-    });
-
-    listener
+    })
 }