From 541a99bbc5f2af42ee65c852f95c1193d4a373f5 Mon Sep 17 00:00:00 2001
From: Julien Fontanet <julien.fontanet@isonoe.net>
Date: Tue, 10 Feb 2015 18:56:32 +0100
Subject: [PATCH] Fix item removal.

---
 packages/xo-lib/collection.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/packages/xo-lib/collection.js b/packages/xo-lib/collection.js
index dedbc1999..ee8277f7c 100644
--- a/packages/xo-lib/collection.js
+++ b/packages/xo-lib/collection.js
@@ -129,6 +129,12 @@ Collection.prototype.set = function (item) {
 };
 
 Collection.prototype.unset = function (item) {
+  var key = this._key(item);
+  item = this._data[key];
+  if (!item) {
+    return;
+  }
+
   unset.call(this, item, this._key(item));
 };