Bug 638431 - Hover feedback missing for disabled splitmenus. r=gavin

browser/base/content/urlbarBindings.xml

@@ -1143,20 +1143,21 @@
 
     <handlers>
       <handler event="mouseover"><![CDATA[
-        if (this.getAttribute("active") != "true" &&
-            this.getAttribute("disabled") != "true") {
+        if (this.getAttribute("active") != "true") {
           this.setAttribute("active", "true");
 
           let event = document.createEvent("Events");
           event.initEvent("DOMMenuItemActive", true, false);
           this.dispatchEvent(event);
 
+          if (this.getAttribute("disabled") != "true") {
             let self = this;
             setTimeout(function () {
               if (self.getAttribute("active") == "true")
                 self.menu.open = true;
             }, this._menuDelay);
           }
+        }
       ]]></handler>
 
       <handler event="popupshowing"><![CDATA[