From 53926143313dabc832339b56bb364f49e9d8cd0c Mon Sep 17 00:00:00 2001
From: ThorstenB <brehmt@gmail.com>
Date: Sun, 25 Sep 2011 16:20:04 +0200
Subject: [PATCH] Don't crash when tank property doesn't (yet) exist.

---
 Nasal/fuel.nas | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Nasal/fuel.nas b/Nasal/fuel.nas
index e4a26ae07..17f554a47 100644
--- a/Nasal/fuel.nas
+++ b/Nasal/fuel.nas
@@ -27,8 +27,8 @@ var update = func {
 
 	var selected_tanks = [];
 	foreach (var t; tanks) {
-		var cap = t.getNode("capacity-gal_us",0).getValue();
-		if (cap > 0.01 and t.getNode("selected").getBoolValue())
+		var cap = t.getNode("capacity-gal_us",0);
+		if ((cap!=nil) and (cap.getValue() > 0.01) and t.getNode("selected").getBoolValue())
 			append(selected_tanks, t);
 	}