title: Angular Service method is called twice?
body: <p>I have a simple service:</p>
  
  <pre><code>angular.module('sf').factory 'sfStatic2',  -&gt;
    {
      doSomething: -&gt;
        console.log('called-x')
        43
    }
  
  angular.module('sf').controller 'UserRegisterCtrl', ($scope,sfStatic2) -&gt;
    $scope.timezoneX = sfStatic2.doSomething()
  </code></pre>
  
  <p>In the console I see two times 'called-x', do you know why is this happening ? I am using angular 1.3.15</p>