waiter.close() is invoked early on onAuthUpdatedAsync method

[ikbalkaya]

After release of 1.2.15
Me and KacperKluka realized that waiter is closed too early, just after execute call from background thread. That was a copy/paste mistake from the previous method.

We should move waiter.close method inside the background thread and close it after the while loop breaks.

┆Issue is synchronized with this Jira Bug by Unito