test: add mustCall to net-can-reset-timeout

PR-URL: #27462
Reviewed-By: Weijia Wang <starkwang@126.com>
Reviewed-By: Yorkie Liu <yorkiefixer@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

test/parallel/test-net-can-reset-timeout.js

@@ -37,13 +37,13 @@ const server = net.createServer(common.mustCall(function(stream) {
     stream.write('WHAT.');
   }));
 
-  stream.on('end', function() {
+  stream.on('end', common.mustCall(function() {
     console.log('server side end');
     stream.end();
-  });
+  }));
 }));
 
-server.listen(0, function() {
+server.listen(0, common.mustCall(function() {
   const c = net.createConnection(this.address().port);
 
   c.on('data', function() {
@@ -54,4 +54,4 @@ server.listen(0, function() {
     console.log('client side end');
     server.close();
   });
-});
+}));