Fix style code. Fixes angular#13951

Author: Vadorequest

src/ng/controller.js

@@ -32,7 +32,7 @@ function $ControllerProvider() {
    * @name $controllerProvider#has
    * @param {string} name Controller name to check.
    */
-  this.has = function(name){
+  this.has = function(name) {
     return controllers.hasOwnProperty(name);
   };