From f7ee82adb8e86345f4fd4597615fdeac7160fe56 Mon Sep 17 00:00:00 2001
From: number Zero <silverunicorn2011@yandex.ru>
Date: Thu, 19 Jan 2017 21:36:01 +0300
Subject: [PATCH] Prevent crash when `default` is unavailable.

---
 crafting.lua | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/crafting.lua b/crafting.lua
index d99f002..fc290dc 100644
--- a/crafting.lua
+++ b/crafting.lua
@@ -8,6 +8,8 @@ local function find_available_craftitem(...)
 			return name
 		end
 	end
+	-- make register_craft happy
+	return "-- unavailable --"
 end
 
 local digiline_wire = "digilines:wire_std_00000000"