message: Don't try to sync if user is not logged in (lib)
diff: @@ -1013,6 +1013,10 @@ void Context::onSync(Poco::Util::TimerTask& task) { // NOLINT
  }
  logger().debug("onFullSync executing");
  + if (!user_) {
  + return;
  + }
  +
  last_sync_started_ = time(0);
  TogglClient client(UI());
  