login form after logout

I use the secure site module to provide an authentication method for the recent changes RSS feed. So the secure site module is set to operate only on the "recent_changes/feed" and "recent_changes/feed/*" pages. For the rest of the website I use the normal login form. The problem is that when I log out on my website, the secure site login form is always shown. Users should of course only be bothered with the secure site login form when they try to access one of the listed pages ("recent_changes/feed" and "recent_changes/feed/*" ), and not when they log out. I identified the reason for this behavior in the function securesite_user, where it says:

    $securesite_enabled = variable_get('securesite_enabled', SECURESITE_DISABLED);
    if ($securesite_enabled == SECURESITE_AUTH || $securesite_enabled == SECURESITE_AUTH_ALT) {
      securesite_user_auth();
    }

I don't know why the login form (securesite_user_auth) should be shown on a logout. Maybe for clearing the cache? Buth that could also be done without showing the secure site login form. In my case, commenting the line securesite_user_auth(); after the if statement solves the problem. But this is probably not what the programmer meant. Any idea how this can be solved the right way, so that a user can log out without being presented a secure site login form?