message: Support pages with no notification icon
diff: @@ -240,6 +240,9 @@ function getUserName() {
  function updateUnreadIndicator() {
  const icon = select('.notification-indicator');
  + if (!icon) {
  + return;
  + }
  const statusMark = icon.querySelector('.mail-status');
  const hasRealNotifications = icon.matches('[data-ga-click$=":unread"]');
  