bin/52288: tmux screws up utmp

[ben@pocket.services]

>Number:         52288
>Category:       bin
>Synopsis:       exiting tmux leaves garbage in utmp
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jun 11 08:00:00 +0000 2017
>Originator:     ben@pocket.services
>Release:        NetBSD 8.0_BETA
>Organization:
	
>Environment:
	
	
System: NetBSD armv7 8.0_BETA NetBSD 8.0_BETA (RPI2.201706101850Z) evbarm
Architecture: earmv7hf
Machine: evbarm
>Description:
	After exiting tmux, there's garbage in utmp
>How-To-Repeat:
	1. Start tmux
	2. Exit tmux

        armv7$ finger
        finger: /dev//pts/3: No such file or directory
	armv7$ who
	bjjl     pts/3    Jun 11 07:44  (tmux(1322).%0)

>Fix:
	

>Unformatted: