bugfix in decoders plain & packed

src/TTN/packed_decoder.js

@@ -4,6 +4,8 @@
 function Decoder(bytes, port) {
 
     var decoded = {};
+    decoded.wifi = 0;
+    decoded.ble = 0;
 
     if (bytes.length === 0) {
         return {};

src/TTN/plain_decoder.js

@@ -3,6 +3,8 @@
 
 function Decoder(bytes, port) {
   var decoded = {};
+  decoded.wifi = 0;
+  decoded.ble = 0;
 
   if (port === 1) {
     var i = 0;