From d35966f082e87bd7d709442aceebfa63be245852 Mon Sep 17 00:00:00 2001
From: Pierre-Adrien Langrognet <plangrognet@laposte.net>
Date: Mon, 29 Aug 2016 13:25:12 +0200
Subject: [PATCH] Luacontroller tool: crashfix

The crash happened when the player uses the luacontroller tool without pointing any node.
---
 moremesecons_luacontroller_tool/init.lua | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/moremesecons_luacontroller_tool/init.lua b/moremesecons_luacontroller_tool/init.lua
index 142926f..15e9259 100644
--- a/moremesecons_luacontroller_tool/init.lua
+++ b/moremesecons_luacontroller_tool/init.lua
@@ -142,6 +142,9 @@ end
 
 -- tests if the node is a luacontroller
 local function is_luacontroller(pos)
+	if not pos then
+		return false
+	end
 	return string.match(minetest.get_node(pos).name, "mesecons_luacontroller:luacontroller%d%d%d%d")
 end