Added code comments

mods/HUD/mcl_inventory/creative.lua

@@ -137,6 +137,9 @@ minetest.register_on_mods_loaded(function()
 		end
 	end
 
+	-- Itemstack descriptions need to be reloaded separately, because tt invalidates minetest.registered_items iterators, somehow
+	-- (and pairs() uses said iterators internally)
+	-- TODO investigate the iterator invalidation, where does it happen?
 	for name, list in pairs(inventory_lists) do
 		for i=1, #list do
 			local stack = ItemStack(list[i])