Incorrect use of member function getValue() in cron

Cron checks for a user's last password reset date and when the password should expire. Currently the code reads:

      $user_last_reset = $user->get('field_last_password_reset')->get(0)->getValue();
...
      $user_expired = $user->get('field_password_expiration')->get(0)->getValue();

This throws an error about use of a member function where it's not possible to use it (getValue()). Unsure exactly what the error was, I fixed it and refreshed ;)

Patch attached to resolve the issue - it's a single-value field so you shouldn't need to do ->get(0) on it.