netbsd-7, cpuctl error output says (null)

[Fredrik Pettai]

(Recent) netbsd-7 version of cpuctl will returns (null) if you feed it with a 
non-existing parameter:

-bash-4.3$ cpuctl foo
cpuctl: unknown command ``(null)''

It used to say:

-bash-4.3$ cpuctl foo
cpuctl: unknown command ``foo’’

/P