PHP Version 8.0 and debug mode + no scopes : receive error

[Shnoulle]

Reproduce

• Set debug mode to 2
• get a PHP8.0
• No scopes selected
• Allow to create new user
• Try to login with a new user

get a PHP warning : foreach() argument must be of type array|object, null given

Line

limesurvey-oauth2/AuthOAuth2.php

Line 312 in 512a4b2

foreach ($this->get('autocreate_roles', null, null, []) as $role) {

Surely have same error in PHP8.3 without debug mode (make some test after)

(i create a fix after checked php8.3)

[Shnoulle]

PR : #5