Race VT+X11 on -current

[Garrett Cooper]

> On May 7, 2015, at 21:34, Hans Petter Selasky <hps at selasky.org> wrote:
> 
> Hi,
> 
> I have a fix, attached.
> 
> I'll just throw this in if nobody objects. Seems like a trivial issue:
> 
> Prevent switching to NULL or own window in the "vt_proc_window_switch"
> function. This fixes an issue where X11 keyboard input can appear
> stuck. The cause of the problem is a duplicate TTY device window
> switch IOCTL during boot, which leaves the "vt_switch_timer" running,
> because the current window is already selected. While at it factor out
> some NULL checks.
> 
> PR:        200032
> Reported by:    multiple people
> MFC after:    1 week

Hi Hans,
    Can you please toss that up on phabricator?
Thanks!
-NGie