benchmark: reduce string concatenations

PR-URL: https://github.com/nodejs/node/pull/12455
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/benchmark/http/http_server_for_chunky_client.js b/benchmark/http/http_server_for_chunky_client.js
index e58ba5f5a15..bdeb517344d 100644
--- a/benchmark/http/http_server_for_chunky_client.js
+++ b/benchmark/http/http_server_for_chunky_client.js
@@ -6,7 +6,7 @@ var fs = require('fs');
 var fork = require('child_process').fork;
 var common = require('../common.js');
 var test = require('../../test/common.js');
-var pep = path.dirname(process.argv[1]) + '/_chunky_http_client.js';
+var pep = `${path.dirname(process.argv[1])}/_chunky_http_client.js`;
 var PIPE = test.PIPE;
 
 try {
@@ -30,7 +30,7 @@ server = http.createServer(function(req, res) {
 });
 
 server.on('error', function(err) {
-  throw new Error('server error: ' + err);
+  throw new Error(`server error: ${err}`);
 });
 
 server.listen(PIPE);