Fix item use bug

maidroid/api.lua

@@ -263,9 +263,10 @@ function maidroid.register_egg(egg_name, def)
 		inventory_image = def.inventory_image,
 		stack_max       = 1,
 
-		on_use = function(item_stack, user, pointed_thing)
+		on_use = function(itemstack, user, pointed_thing)
 			if pointed_thing.above ~= nil and def.product_name ~= nil then
 				minetest.add_entity(pointed_thing.above, def.product_name)
+				itemstack:take_item()
 				return itemstack
 			end
 			return nil