Auto setNonce only if empty,

[ingo-lorenz]

OpenID-Connect-PHP/src/OpenIDConnectClient.php

Line 747 in f7c91b9

$nonce = $this->setNonce($this->generateRandString());

The nonce is always created directly before the redirection (authentication). It would be good if this is only created if it is empty before the redirection. I would like to set the nonce myself in order to set the user to the correct internal context after authentication.

If necessary, I can also create a pull request for this.

Many thanks and best regards
Ingo