Make backward.

api.lua

@@ -2,6 +2,10 @@
 local storage = minetest.get_mod_storage()
 
 function skins.get_player_skin(player)
+	if player:get_attribute("skinsdb:skin_key") then
+		storage:set_string(player:get_player_name(), player:get_attribute("skinsdb:skin_key"))
+		player:set_attribute("skinsdb:skin_key", nil)
+	end
 	local skin = storage:get_string(player:get_player_name())
 	return skins.get(skin) or skins.get(skins.default)
 end