gluon-web-network: fix variable shadowing

package/gluon-web-network/luasrc/lib/gluon/config-mode/model/admin/network.lua:122:16: (W431) shadowing upvalue f on line 19

Fixes: bab4af01 ("gluon-web-network: improve PoE GPIO name translation
handling")

package/gluon-web-network/luasrc/lib/gluon/config-mode/model/admin/network.lua

@@ -119,10 +119,10 @@ uci:foreach("system", "gpio_switch", function(si)
 		}
 
 		local name
-		for pattern, f in pairs(texts) do
+		for pattern, func in pairs(texts) do
 			local match = {si.name:match(pattern)}
 			if match[1] then
-				name = f(match)
+				name = func(match)
 				break
 			end
 		end