Fixed rare login bug on iOS 6.
Fixed rare login bug on iOS 6.

Bug: an iOS 6 device would have the app set to "ON" in "Settings -> Facebook" but the Facebook SDK would return an error as if the app was "OFF" (ie. blocked by user).

Solution: call [FBSession renewSystemCredentials] when initializing the ANE. That requires killing/restarting the app to solve the issue.

nodrock/ANE-Facebook,freshplanet/ANE-Facebook,StarIslandGames/ANE-Facebook,freshplanet/ANE-Facebook,freshplanet/ANE-Facebook,StarIslandGames/ANE-Facebook,nodrock/ANE-Facebook,freshplanet/ANE-Facebook