Temporarily change our umask to 066 so that the potential creation

of wtmp.0 is done as mode 600.

This ensures that tight permissions set in /etc/newsyslog.conf for
wtmp logging aren't ``betrayed''.

Suggested by:	lumpy <lumpy@the.whole.net>
MFC after:	3 days

etc/periodic/monthly/200.accounting

@@ -11,6 +11,8 @@ then
     source_periodic_confs
 fi
 
+oldmask=$(umask)
+umask 066
 case "$monthly_accounting_enable" in
     [Yy][Ee][Ss])
 	W=/var/log/wtmp
@@ -45,4 +47,5 @@ case "$monthly_accounting_enable" in
     *)  rc=0;;
 esac
 
+umask $oldmask
 exit $rc