12bb4bd7e6
environment.
This is a putely cosmetic change, as the default behaviour according
to tzset(3) is:
```
If TZ does not appear in the environment, the best available
approximation to local wall clock time, as specified by the
tzfile(5)-format file /etc/localtime is used.
```
Slightly modified from the patch supplied by zi to use the rc.subr(8)
'${name}_env' variable.
PR: 248185
Submitted by: zi