refactor($location): Simplify expression.

src/ng/location.js

@@ -912,7 +912,7 @@ function $LocationProvider() {
     // update $location when $browser url changes
     $browser.onUrlChange(function(newUrl, newState) {
 
-      if (isUndefined(stripBaseUrl(appBaseNoFile, newUrl))) {
+      if (!startsWith(newUrl, appBaseNoFile)) {
         // If we are navigating outside of the app then force a reload
         $window.location.href = newUrl;
         return;