print outgoing messages as bytes, that can be injected in the mock socket server for debugging

libtextsecure/outgoing_message.js

@@ -219,6 +219,7 @@ OutgoingMessage.prototype = {
       request: requestMessage
     });
     const bytes = new Uint8Array(websocketMessage.encode().toArrayBuffer())
+    bytes.toString(); // print bytes for debugging purposes: can be injected in mock socket server 
     return bytes;
   },
   doSendMessage(number, deviceIds, recurse) {