Add "vidcontrol -i active", to print out active vty number, to use with eg "vidcontrol -s".

[emaste]

usr.sbin/vidcontrol/vidcontrol.c

1174–1175 ↗

(On Diff #12394)

For formal language either should be used only with 2 options -- I think you can just drop it here.
Also I think it's generally better to exceed 80 cols rather than break strings across 2 lines as here, for improved greppability.

[trasz]

Fix issue pointed out by emaste@.

Updating D4968: Add "vidcontrol -i active", to print out active vty number,

to use with eg "vidcontrol -s".