Correcting the request for arguments, when logging in a user via a function call.

Specifically, fixes the issue where the user was not being logged in automatically, if the Users module was configured as such.

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| Refs tickets  | -
| License       | MIT
| Doc PR        | -