From a4bbd1cd2c03fa3a64254ebc1dd17205ab57a5fe Mon Sep 17 00:00:00 2001
From: Tobias Dammers <tdammers@gmail.com>
Date: Tue, 19 Oct 2021 17:03:36 +0200
Subject: [PATCH] Bugfix: ignore tanks with nil capacity

---
 addon-main.nas | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/addon-main.nas b/addon-main.nas
index ae08aa9..dda28b3 100644
--- a/addon-main.nas
+++ b/addon-main.nas
@@ -232,8 +232,8 @@ var importFOB = func (ofp) {
             amount = math.min(amount, maxAmount);
         }
         var tankCapacity =
-                tankNode.getNode('capacity-m3').getValue() *
-                tankNode.getNode('density-kgpm3').getValue();
+                (tankNode.getNode('capacity-m3').getValue() or 0) *
+                (tankNode.getNode('density-kgpm3').getValue() or 0);
         amount = math.min(amount, tankCapacity);
         logprint(3, sprintf("Allocating %1.1f/%1.1f kg to %s", amount, unallocated, tankName));
         tankNode.getNode('level-kg').setValue(amount);