更新代码您好，我在httpClient中有内存泄漏，我添加了sync.WaitGroup，现在我看到带有httpClient的goroutine没有关闭。如何解决？funccheckProxySOCKS(proxstring,cchanQR,wg*sync.WaitGroup)(errerror){deferwg.Done()dialer,_:=proxy.SOCKS5("tcp",prox,nil,proxy.Direct)timeout:=time.Duration(2*time.Second)httpClient:=&http.Client{Timeout:timeout,Tra