From 4b9039266e24523ef199e2b36a05778d9918fd54 Mon Sep 17 00:00:00 2001
From: Samuel Sieb <samuel@sieb.net>
Date: Mon, 22 Feb 2016 15:47:18 -0800
Subject: [PATCH] Fix crash due to force loading changes.

---
 mesecons/internal.lua | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mesecons/internal.lua b/mesecons/internal.lua
index b252983..d479852 100644
--- a/mesecons/internal.lua
+++ b/mesecons/internal.lua
@@ -357,7 +357,7 @@ end
 
 function mesecon.is_power_on(pos, rulename)
 	local node = mesecon.get_node_force(pos)
-	if mesecon.is_conductor_on(node, rulename) or mesecon.is_receptor_on(node.name) then
+	if node and (mesecon.is_conductor_on(node, rulename) or mesecon.is_receptor_on(node.name)) then
 		return true
 	end
 	return false
@@ -365,7 +365,7 @@ end
 
 function mesecon.is_power_off(pos, rulename)
 	local node = mesecon.get_node_force(pos)
-	if mesecon.is_conductor_off(node, rulename) or mesecon.is_receptor_off(node.name) then
+	if node and (mesecon.is_conductor_off(node, rulename) or mesecon.is_receptor_off(node.name)) then
 		return true
 	end
 	return false