From 46befdd638dba0bfa20fdfdb389692cb106630dd Mon Sep 17 00:00:00 2001
From: AsamK <asamk@gmx.de>
Date: Sat, 16 Apr 2016 15:07:49 +0200
Subject: [PATCH] Don't save if username is null

---
 src/main/java/org/asamk/signal/Manager.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/main/java/org/asamk/signal/Manager.java b/src/main/java/org/asamk/signal/Manager.java
index 3931f3e3..be94f7f5 100644
--- a/src/main/java/org/asamk/signal/Manager.java
+++ b/src/main/java/org/asamk/signal/Manager.java
@@ -180,6 +180,9 @@ class Manager implements Signal {
     }
 
     private void save() {
+        if (username == null) {
+            return;
+        }
         ObjectNode rootNode = jsonProcessot.createObjectNode();
         rootNode.put("username", username)
                 .put("deviceId", deviceId)