From 9e079fe642e985786fce259418bf68448585bec3 Mon Sep 17 00:00:00 2001
From: Klaus K Wilting <Klaus.K.Wilting@deutschebahn.com>
Date: Sun, 16 Dec 2018 15:38:59 +0100
Subject: [PATCH] packed_decoder.js: errorhandling NULL input

---
 src/TTN/packed_decoder.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/TTN/packed_decoder.js b/src/TTN/packed_decoder.js
index 331024d1..c8f319a2 100644
--- a/src/TTN/packed_decoder.js
+++ b/src/TTN/packed_decoder.js
@@ -5,6 +5,10 @@ function Decoder(bytes, port) {
 
     var decoded = {};
 
+    if (bytes.length === 0)  {
+        return {};
+    }
+
     if (port === 1) {
         // only wifi counter data, no gps
         if (bytes.length === 2) {