test: change to arrow functions in send-bad-arguments

PR-URL: #23483
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Shelley Vohr <codebytere@gmail.com>

test/parallel/test-dgram-send-bad-arguments.js

@@ -28,17 +28,17 @@ const buf = Buffer.from('test');
 const host = '127.0.0.1';
 const sock = dgram.createSocket('udp4');
 
-assert.throws(function() {
+assert.throws(() => {
  sock.send();
 }, TypeError); // First argument should be a buffer.
 
 // send(buf, offset, length, port, host)
-assert.throws(function() { sock.send(buf, 1, 1, -1, host); }, RangeError);
-assert.throws(function() { sock.send(buf, 1, 1, 0, host); }, RangeError);
-assert.throws(function() { sock.send(buf, 1, 1, 65536, host); }, RangeError);
+assert.throws(() => { sock.send(buf, 1, 1, -1, host); }, RangeError);
+assert.throws(() => { sock.send(buf, 1, 1, 0, host); }, RangeError);
+assert.throws(() => { sock.send(buf, 1, 1, 65536, host); }, RangeError);
 
 // send(buf, port, host)
-assert.throws(function() { sock.send(23, 12345, host); }, TypeError);
+assert.throws(() => { sock.send(23, 12345, host); }, TypeError);
 
 // send([buf1, ..], port, host)
-assert.throws(function() { sock.send([buf, 23], 12345, host); }, TypeError);
+assert.throws(() => { sock.send([buf, 23], 12345, host); }, TypeError);