Fixed click binding modifier test in IE

Author: JangoSteve

test/public/test/override.js

@@ -41,9 +41,11 @@ asyncTest("the getter for an element's href works normally if not overridden", 1
 asyncTest("the event selector strings are overridable", 2, function() {
   var documentClickBindings = $._data(document, 'events').click,
       linkClickBinding = $.grep(documentClickBindings, function(a) {
-        return a.selector.indexOf('a[data-remote]') != -1;
+        return a.selector && a.selector.indexOf('a[data-remote]') != -1;
       })[0];
 
+      //var documentClickBindings = "", linkClickBinding = {selector: ""};
+
   ok($.rails.linkClickSelector.indexOf(', a[data-custom-remote-link]') != -1, 'linkClickSelector contains custom selector');
 
   ok(linkClickBinding.selector.indexOf(', a[data-custom-remote-link]') != -1, 'actual document binding contains custom selector');