K 10
svn:author
V 6
emaste
K 8
svn:date
V 27
2017-11-21T13:55:10.380443Z
K 7
svn:log
V 208
vidcontrol: correct history size error message

`vidcontrol -h 0` is acceptable, so be explicit that it's less than zero
that is not allowed.

Reported by:	Siva Mahadevan
Sponsored by:	The FreeBSD Foundation

END