From 73c75a9b347a76fe9cadf4bf3529844198b70d2a Mon Sep 17 00:00:00 2001
From: Moxie Marlinspike <moxie@thoughtcrime.org>
Date: Tue, 28 Nov 2017 14:33:22 -0800
Subject: [PATCH] Don't delete GCM id during registration if it never existed

Fixes #7229
---
 src/org/thoughtcrime/securesms/RegistrationActivity.java | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/org/thoughtcrime/securesms/RegistrationActivity.java b/src/org/thoughtcrime/securesms/RegistrationActivity.java
index f02220bd8e..d25f3324f0 100644
--- a/src/org/thoughtcrime/securesms/RegistrationActivity.java
+++ b/src/org/thoughtcrime/securesms/RegistrationActivity.java
@@ -355,7 +355,10 @@ public class RegistrationActivity extends BaseActionBarActivity implements Verif
           SignedPreKeyRecord signedPreKey = PreKeyUtil.generateSignedPreKey(RegistrationActivity.this, identityKey, true);
 
           accountManager.setPreKeys(identityKey.getPublicKey(), signedPreKey, records);
-          accountManager.setGcmId(registrationState.gcmToken);
+
+          if (registrationState.gcmToken.isPresent()) {
+            accountManager.setGcmId(registrationState.gcmToken);
+          }
 
           TextSecurePreferences.setGcmRegistrationId(RegistrationActivity.this, registrationState.gcmToken.orNull());
           TextSecurePreferences.setGcmDisabled(RegistrationActivity.this, !registrationState.gcmToken.isPresent());