fix: removed res.end

Author: marco-ippolito

test/parallel/test-domain-multi.js

@@ -47,10 +47,8 @@ const server = http.createServer((req, res) => {
   b.on('error', common.mustCall((er) => {
     if (res) {
       // Introduce an error on the client by writing unexpected data.
-      // The client is now expecting a chunk header so any letter will 
-      // have the parser throw an error.
+      // The client is now expecting a chunk header so any letter will have the parser throw an error.
       res.socket.write('H');
-      res.end('An error occurred');
     }
     // res.writeHead(500), res.destroy, etc.
     server.close();