place_node, dig_node and punch_node; an in-game tester tool; remove old code

builtin/item.lua

@@ -250,12 +250,14 @@ function minetest.node_dig(pos, node, digger)
 		wielded:add_wear(dp.wear)
 		digger:set_wielded_item(wielded)
 
-		-- Add dropped items
+		-- Add dropped items to object's inventory
+		if digger:get_inventory() then
 			local _, dropped_item
 			for _, dropped_item in ipairs(drops) do
 				digger:get_inventory():add_item("main", dropped_item)
 			end
 		end
+	end
 	
 	local oldnode = nil
 	local oldmetadata = nil