Bug 20581: (follow-up) Passed value to status_alias

Bug 20581: (follow-up) Passed value to status_alias

Now we have overloaded status_alias, we can no longer pass it undef (as
it uses that to determine if it's being used as a getter or setter). So
we now pass it -1 to indicate it should actually be setting undef (a
hack, I know, but what are you going to do...)

This patch makes sure ill-request.pl conforms to that. It also fixes the
testing of the passed parameter, which was wrong.

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>