title: UIImagePickerController crashes on iOS10
body: <p>On presenting <code>UIImagePickerController</code> with photo library source on <em>iOS10</em>, my app crashes.</p>
  
  <p>On <em>iOS10 with</em> camera source and on <em>iOS9</em> with photo library and camera sources, the app does not crash.</p>
  
  <p>The app is written in <em>Swift 2.2</em> and built by <em>Xcode 7.3.1</em>.</p>
  
  <p>Why does the crash occur?</p>
  
  <pre><code>let imagePicker = UIImagePickerController()
  imagePicker.sourceType = .PhotoLibrary
  imagePicker.allowsEditing = true
  imagePicker.delegate = self
  self.presentViewController(imagePicker, animated: true, completion: nil)
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/PSKdh.png" rel="noreferrer"><img src="https://i.stack.imgur.com/PSKdh.png" alt="stack trace"></a></p>