修复函数名错误引起的参数类型,返回值类型错误 (#343)

eBook/examples/chapter_15/simple_tcp_server_v1.go

@@ -26,7 +26,7 @@ func main() {
 func initServer(hostAndPort string) net.Listener {
 	serverAddr, err := net.ResolveTCPAddr("tcp", hostAndPort)
 	checkError(err, "Resolving address:port failed: '"+hostAndPort+"'")
-	listener, err := net.Listen("tcp", serverAddr.String())
+	listener, err := net.ListenTCP("tcp", serverAddr)
 	checkError(err, "ListenTCP: ")
 	println("Listening to: ", listener.Addr().String())
 	return listener