facebook/facebook-ios-sdk — pull request #499 by Andreyul (2012-10-24 00:40:08+00:00)
Title: dialogDidCancel should be called when tapping Cancel button in Request dialog, not dialogDidSucceed

Fixed [FBDialog dialogDidSucceed] being called when user presses Cancel button in Request Dialog. [FBDialog dialogDidCancel] will be called in such a case.