title: Chrome localstorage doesn't work property in Mac OS
body: <p>I have an extension which require some data from localstorage.
  Algorithm:
  If data not found (or empty) then alert(); and return;</p>
  
  <pre><code>var storage = chrome.storage.local;
  storage.get('data', function(items) 
  { 
      if (!items.data.apiKey) { alert('Api key not set!'); return;} // not working
      //nextstuff that is not working if there is no items.data.apiKey
  }
  </code></pre>
  
  <p>This code is working great on Windows. In Mac OS it doesn't alert me, neighter return if it doesn't return data.</p>