[package] firewall: ensure that fw_get_subnet4() sets an empty value if no (valid...

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27198 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/firewall/files/lib/fw.sh b/package/firewall/files/lib/fw.sh
index 19dddef..8969472 100644 (file)
--- a/package/firewall/files/lib/fw.sh
+++ b/package/firewall/files/lib/fw.sh
@@ -242,5 +242,6 @@ fw_get_subnet4() {
                                export -n -- "$_var=! $_flag $_ipaddr/${_netmask:-255.255.255.255}" || \
                                export -n -- "$_var=$_flag $_ipaddr/${_netmask:-255.255.255.255}"
                ;;
+               *) export -n -- "$_var=" ;;
        esac
 }