util: use Object.create(null) for dictionary object

Fixes #3788 `arrayToHash()` needs to use `Object.create(null)` for its dictionary object. Refs: #3791 PR-URL: #3831 Reviewed-By: Trevor Norris <trev.norris@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
nodejs · Nov 17, 2015 · d61cb90 · d61cb90
1 parent 1c1e708
commit d61cb90
Showing 1 changed file with 2 additions and 2 deletions.
diff --git 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;
   });