coding style nit

browser/base/content/search.xml

@@ -134,10 +134,8 @@
           }
 
           if (this.currentEngine != "__PhoenixFindInPage") {
-            const ISEARCH_CONTRACTID = "@mozilla.org/rdf/datasource;1?name=internetsearch";
-            const nsIInternetSearchService = Components.interfaces.nsIInternetSearchService;           
-            var ISEARCHSVC = Components.classes[ISEARCH_CONTRACTID]
-                                       .getService(nsIInternetSearchService);
+            var ISEARCHSVC = Components.classes["@mozilla.org/rdf/datasource;1?name=internetsearch"]
+                                       .getService(Components.interfaces.nsIInternetSearchService);
             var searchURL = ISEARCHSVC.GetInternetSearchURL(this.currentEngine, escape(this.value), 
                                                             0, 0, {value:0});
             gURLBar.value = searchURL;