net/mwan3: remove lock file on mwan3 stop

Signed-off-by: Florian Eckert <fe@dev.tdt.de>
(cherry picked from commit 5e123852bc)

net/mwan3/files/lib/mwan3/mwan3.sh

@@ -15,6 +15,10 @@ mwan3_unlock() {
 	lock -u /var/run/mwan3.lock
 }
 
+mwan3_lock_clean() {
+	rm -rf /var/run/mwan3.lock
+}
+
 mwan3_get_iface_id()
 {
 	local _tmp _iface _iface_count

net/mwan3/files/usr/sbin/mwan3

@@ -164,6 +164,8 @@ stop()
 	for ipset in $($IPS -n list | grep mwan3 | grep -E '_v4|_v6'); do
 		$IPS -q destroy $ipset
 	done
+
+	mwan3_lock_clean
 }
 
 restart() {