fix(jqLite): forgive unregistration of a non-registered handler

Author: pkozlowski-opensource

src/jqLite.js

@@ -205,7 +205,7 @@ function JQLiteUnbind(element, type, fn) {
       removeEventListenerFn(element, type, events[type]);
       delete events[type];
     } else {
-      arrayRemove(events[type], fn);
+      arrayRemove(events[type] || [], fn);
     }
   }
 }

test/jqLiteSpec.js

@@ -843,6 +843,12 @@ describe('jqLite', function() {
       aElem.unbind('click', function() {});
     });
 
+    it('should do nothing when a specific listener was not registered', function () {
+      var aElem = jqLite(a);
+      aElem.bind('click', function() {});
+
+      aElem.unbind('mouseenter', function() {});
+    });
 
     it('should deregister all listeners', function() {
       var aElem = jqLite(a),