allow chaining of on_construct instead of overwriting in registration function

homedecor/handlers/inventory.lua

@@ -61,16 +61,13 @@ function homedecor.handle_inventory(name, def)
 	if not inventory then return end
 	def.inventory = nil
 
-	local infotext = def.infotext
-
-	def.on_construct = def.on_construct or function(pos)
-		local meta = minetest.get_meta(pos)
-		if infotext then
-			meta:set_string("infotext", infotext)
-		end
+	local on_construct = def.on_construct
+	def.on_construct = function(pos)
 		local size = inventory.size or default_inventory_size
+		local meta = minetest.get_meta(pos)
 		meta:get_inventory():set_size("main", size)
 		meta:set_string("formspec", inventory.formspec or get_formspec_by_size(size))
+		if on_construct then on_construct(pos) end
 	end
 
 	def.can_dig = def.can_dig or default_can_dig

homedecor/handlers/registration.lua

@@ -24,10 +24,12 @@ function homedecor.register(name, def)
 	local infotext = def.infotext
 	--def.infotext = nil -- currently used to set locked refrigerator infotexts
 
-	if infotext and not def.on_construct then
+	if infotext then
+		local on_construct = def.on_construct
 		def.on_construct = function(pos)
 			local meta = minetest.get_meta(pos)
 			meta:set_string("infotext", infotext)
+			if on_construct then on_construct(pos) end
 		end
 	end