fix a little sooti

relay.go

@@ -126,15 +126,15 @@ func (client *Client) handleRequest() {
 
 	rConn, err := net.Dial(network, address)
 
-	defer func() {
-		_ = rConn.Close()
-	}()
-
 	if err != nil {
 		log.Println(fmt.Errorf("failed to connect to socket: %v", err))
 		return
 	}
 
+	defer func() {
+		_ = rConn.Close()
+	}()
+
 	// transmit data
 	go Copy(client.conn, rConn)
 	Copy(rConn, client.conn)