Handle already authorized users

[Bohooslav]

When the user is already authorized, but the OAuth login triggered anyway, the server gets frozen, unresponsive on complete callback, without any error messages, just freezes the server.

[nijel]

You should figure out what exactly hangs. There should be no reason for authentication to block for existing users.

[Bohooslav]

I have no clue how to figure that out. No logs, no error, nothing, it just times out on /complete/x-oauth and the server simply stops responding. Maybe you may give me some advice on how to debug that issue?