From f5fb714f47c58abe079b61f0543c2d42c9775415 Mon Sep 17 00:00:00 2001
From: Vanessa Ezekowitz <vanessaezekowitz@gmail.com>
Date: Sat, 31 Aug 2013 22:03:23 -0400
Subject: [PATCH] fix nil reference crash

---
 init.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/init.lua b/init.lua
index 06ed20c..fb4f306 100644
--- a/init.lua
+++ b/init.lua
@@ -146,7 +146,7 @@ minetest.register_node("gloopblocks:scaffolding", {
 	groups = {choppy=3, oddly_breakable_by_hand=3},
 	sounds = default.node_sound_wood_defaults(),
 	on_rightclick = function(pos, node, clicker, itemstack)
-		if itemstack:get_name() == node.name then
+		if itemstack and itemstack:get_name() == node.name then
 			for i = 1,19 do
 				if minetest.get_node({x=pos.x,y=pos.y-i,z=pos.z}).name == "gloopblocks:scaffolding" and scafffound ~= 0 and scafffound ~= 1 then
 					local scafffound = 1