misc/58565: lib/libcurses/t_curses writes to /tmp and doesn't clean up

[campbell+netbsd%mumble.net@localhost]

>Number:         58565
>Category:       misc
>Synopsis:       lib/libcurses/t_curses writes to /tmp and doesn't clean up
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    misc-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Aug 10 02:45:00 +0000 2024
>Originator:     Taylor R Campbell
>Release:        current, ...
>Organization:
The /tmp/NetBSD.windation
>Environment:
>Description:
After `cd /usr/tests/lib/libcurses && atf-run', a file called /tmp/getwin.win remains.
>How-To-Repeat:
cd /usr/tests/lib/libcurses && atf-run
>Fix:
Yes, please!

Ideally, it should use the atf work directory.

Failing that, it should respect $TMPDIR instead of having /tmp hard-coded.

And in any case it should clean up after itself.