From 4c6076088aa19703494353d3c6e234ad089986c4 Mon Sep 17 00:00:00 2001
From: Eugene Grosbein <eugen@FreeBSD.org>
Date: Tue, 21 Jan 2020 17:16:02 +0000
Subject: [PATCH] libexec/rc/rc.d/ipfw: style fix after r356943

Also, make sure it does not break for systems without ipfw code loaded.

MFC after:	1 months
X-MFC-with:	356943
---
 libexec/rc/rc.d/ipfw | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/libexec/rc/rc.d/ipfw b/libexec/rc/rc.d/ipfw
index ef8ce796b41..df14b7eaa0d 100755
--- a/libexec/rc/rc.d/ipfw
+++ b/libexec/rc/rc.d/ipfw
@@ -127,10 +127,11 @@ ipfw_stop()
 ipfw_status()
 {
 	status=$(sysctl -i -n net.inet.ip.fw.enable)
+	: ${status:=0}
 	if afexists inet6; then
-		status=$(( $status + $(sysctl -i -n net.inet6.ip6.fw.enable) ))
+		status=$((${status} + $(sysctl -i -n net.inet6.ip6.fw.enable)))
 	fi
-	if [ ${status:-0} -eq 0 ]; then
+	if [ ${status} -eq 0 ]; then
 		echo "ipfw is not enabled"
 		exit 1
 	else