From 0397223ab4a050f4acffeee6952660710327f2a0 Mon Sep 17 00:00:00 2001
From: Ryunosuke SATO <tricknotes.rs@gmail.com>
Date: Mon, 10 Dec 2012 13:34:33 +0900
Subject: [PATCH] events: use null assignment instead of deleting property

---
 lib/events.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/events.js b/lib/events.js
index d71380dcd66..fc933c5fd87 100644
--- a/lib/events.js
+++ b/lib/events.js
@@ -226,7 +226,7 @@ EventEmitter.prototype.removeListener = function(type, listener) {
     if (position < 0) return this;
     list.splice(position, 1);
     if (list.length == 0)
-      delete this._events[type];
+      this._events[type] = null;
 
     if (this._events.removeListener) {
       this.emit('removeListener', type, listener);
@@ -234,7 +234,7 @@ EventEmitter.prototype.removeListener = function(type, listener) {
   } else if (list === listener ||
              (list.listener && list.listener === listener))
   {
-    delete this._events[type];
+    this._events[type] = null;
 
     if (this._events.removeListener) {
       this.emit('removeListener', type, listener);