test: change anonymous closure function to arrow function

PR-URL: #24433 Reviewed-By: Michaël Zasso <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Gireesh Punathil <[email protected]>

Author: nethraravindran

test/parallel/test-net-connect-options-port.js

@@ -76,15 +76,15 @@ const net = require('net');
 constexpectedConnections=72;
 letserverConnected=0;
 
-constserver=net.createServer(common.mustCall(function(socket){
+constserver=net.createServer(common.mustCall((socket)=>{
 socket.end('ok');
 if(++serverConnected===expectedConnections){
 server.close();
 }
 },expectedConnections));
 
-server.listen(0,'localhost',common.mustCall(function(){
-constport=this.address().port;
+server.listen(0,'localhost',common.mustCall(()=>{
+constport=server.address().port;
 
 // Total connections = 3 * 4(canConnect) * 6(doConnect) = 72
 canConnect(port);
@@ -93,7 +93,7 @@ const net = require('net');
 }));
 
 // Try connecting to random ports, but do so once the server is closed
-server.on('close',function(){
+server.on('close',()=>{
 asyncFailToConnect(0);
 asyncFailToConnect(/* undefined */);
 });
@@ -193,7 +193,7 @@ function canConnect(port){
 }
 
 functionasyncFailToConnect(port){
-constonError=()=>common.mustCall(function(err){
+constonError=()=>common.mustCall((err)=>{
 constregexp=/^Error:connectE\w+.+$/;
 assert(regexp.test(String(err)),String(err));
 });