test: more common.mustNotCall in net

Author: nektro

test/parallel/test-net-eaddrinuse.js

@@ -24,10 +24,8 @@ const common = require('../common');
 const assert = require('assert');
 const net = require('net');
 
-const server1 = net.createServer(function(socket) {
-});
-const server2 = net.createServer(function(socket) {
-});
+const server1 = net.createServer(common.mustNotCall());
+const server2 = net.createServer(common.mustNotCall());
 server1.listen(0, common.mustCall(function() {
   server2.on('error', function(error) {
     assert.strictEqual(error.message.includes('EADDRINUSE'), true);

test/parallel/test-net-listen-close-server.js

@@ -23,8 +23,7 @@
 const common = require('../common');
 const net = require('net');
 
-const server = net.createServer(function(socket) {
-});
+const server = net.createServer(common.mustNotCall());
 server.listen(0, common.mustNotCall());
 server.on('error', common.mustNotCall());
 server.close();

test/parallel/test-net-listen-error.js

@@ -23,7 +23,6 @@
 const common = require('../common');
 const net = require('net');
 
-const server = net.createServer(function(socket) {
-});
+const server = net.createServer(common.mustNotCall());
 server.listen(1, '1.1.1.1', common.mustNotCall()); // EACCES or EADDRNOTAVAIL
 server.on('error', common.mustCall());