From ab59cc6c44705b1244a77eba999d736f9eb3c6ae Mon Sep 17 00:00:00 2001
From: Pawel Kozlowski <pkozlowski.opensource@gmail.com>
Date: Sat, 3 Aug 2013 17:57:37 +0200
Subject: [PATCH] fix(jqLite): forgive unregistration of a non-registered
 handler

---
 src/jqLite.js      | 2 +-
 test/jqLiteSpec.js | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/jqLite.js b/src/jqLite.js
index 8a8a28e8d2d4..775fef512a67 100644
--- a/src/jqLite.js
+++ b/src/jqLite.js
@@ -212,7 +212,7 @@ function JQLiteOff(element, type, fn) {
         removeEventListenerFn(element, type, events[type]);
         delete events[type];
       } else {
-        arrayRemove(events[type], fn);
+        arrayRemove(events[type] || [], fn);
       }
     });
   }
diff --git a/test/jqLiteSpec.js b/test/jqLiteSpec.js
index e74c09a54731..3648cda487d7 100644
--- a/test/jqLiteSpec.js
+++ b/test/jqLiteSpec.js
@@ -890,6 +890,12 @@ describe('jqLite', function() {
       aElem.off('click', function() {});
     });
 
+    it('should do nothing when a specific listener was not registered', function () {
+      var aElem = jqLite(a);
+      aElem.on('click', function() {});
+
+      aElem.off('mouseenter', function() {});
+    });
 
     it('should deregister all listeners', function() {
       var aElem = jqLite(a),