Only create /var/log/sendmail.st if start sendmail.

For those of us that never use or start sendmail, it is unneeded.

Approved by:	bapt (mentor)

etc/rc.d/sendmail

@@ -197,6 +197,10 @@ sendmail_precmd()
 			sendmail_cert_create
 		fi
 	fi
+
+	if [ ! -f /var/log/sendmail.st ]; then
+		/usr/bin/install -m 640 -o root -g wheel /dev/null /var/log/sendmail.st
+	fi
 }
 
 run_rc_command "$1"

etc/sendmail/Makefile

@@ -70,8 +70,6 @@ distribution:
 	    ${.CURDIR}/freebsd.submit.mc freebsd.submit.cf ${DESTDIR}/etc/mail
 	${INSTALL} -o ${BINOWN} -g ${BINGRP} -m 444 \
 	    ${SMDIR}/helpfile ${DESTDIR}/etc/mail
-	${INSTALL} -o ${BINOWN} -g ${BINGRP} -m 640 \
-	    /dev/null ${DESTDIR}/var/log/sendmail.st
 .if defined(INSTALL_CF)
 	${INSTALL} -o ${BINOWN} -g ${BINGRP} -m 644 \
 	    ${INSTALL_CF} ${DEST_CF}