From 9d0396cd638983d207cb7bb0a5a21220a86ec1de Mon Sep 17 00:00:00 2001
From: Minwoo Jung <jmwsoft@gmail.com>
Date: Sun, 15 Nov 2015 13:56:05 +0900
Subject: [PATCH] util: use Object.create(null) for dictionary object

Fixes https://github.com/nodejs/node/issues/3788
`arrayToHash()` needs to use `Object.create(null)` for its dictionary object.

Refs: https://github.com/nodejs/node/pull/3791
PR-URL: https://github.com/nodejs/node/pull/3831
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
---
 lib/util.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/util.js b/lib/util.js
index 97c5c10fd8..b034b29b55 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -159,9 +159,9 @@ function stylizeNoColor(str, styleType) {
 
 
 function arrayToHash(array) {
-  var hash = {};
+  var hash = Object.create(null);
 
-  array.forEach(function(val, idx) {
+  array.forEach(function(val) {
     hash[val] = true;
   });