From 97664c85648731fa69aae3a70463f88fd8256625 Mon Sep 17 00:00:00 2001
From: CN_SZTL <cnsztl@project-openwrt.eu.org>
Date: Wed, 24 Jun 2020 18:46:38 +0800
Subject: [PATCH] OpenAppFilter: sync with upstream source

---
 .../luci-app-appfilter/luasrc/model/cbi/appfilter/appfilter.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package/ctcgfw/luci-app-appfilter/luasrc/model/cbi/appfilter/appfilter.lua b/package/ctcgfw/luci-app-appfilter/luasrc/model/cbi/appfilter/appfilter.lua
index fc5d250a98..5a7c328159 100644
--- a/package/ctcgfw/luci-app-appfilter/luasrc/model/cbi/appfilter/appfilter.lua
+++ b/package/ctcgfw/luci-app-appfilter/luasrc/model/cbi/appfilter/appfilter.lua
@@ -108,7 +108,7 @@ while true do
 	end
 	if not line:match("Ip*") then
 		local ip, hw_type, flags, mac, mask, device = line:match("(%S+) %s+ (%S+) %s+ (%S+) %s+ (%S+) %s+ (%S+) %s+ (%S+)")
-		if device:match("lan") then
+		if device ~= nil and mac ~= nil and device:match("lan") then
 			local hostname=get_hostname_by_mac(mac)
 			if not hostname then
 				users:value(mac, mac);