title: reauthorizeWithPublishPermissions handler is called with ErrorReauthorizedFailedReasonUserCancelled
body: <p>I'm using iOS SDK 3.1.1 and trying to get both read and publish permission at once.
  As tutorial says, I'm calling FBSession openActiveSessionWithReadPermissions and in its handler - handler A - call [[FBSession activeSession] reauthorizeWithPublishPermissions only if handler A is called with session state of FBSessionStateOpen.</p>
  
  <p>When I have facebook account is set in iOS 6's setting, reauthorizeWithPublishPermissions's handler - handler B - is called normally, with error argument of nil.</p>
  
  <p>However, if I don't have facebook account set in iOS 6's setting, handler B is called with reauth error named "ErrorReauthorizeFailedReasonUserCancelled" when app is switched to Safari to gain publish permission.</p>
  
  <p>More weird thing is this. In both cases before handler B is called, handler A is called with session state of FBSessionStateOpenTokenExtended.</p>
  
  <p>Are these normal or expected behavior of new SDK? If so, should I not check if error is nil in handler B?</p>