message: Fix failure if no session is present
diff: @@ -114,7 +114,7 @@ module.exports = class Writer {
  }
  async _commitOptions(operation, type, id, session) {
  - let user = await session.loadUser();
  + let user = session && await session.loadUser();
  return {
  authorName: (user && user.attributes && user.attributes['full-name']) || 'Anonymous Coward',
  authorEmail: (user && user.attributes && user.attributes.email) || 'anon@example.com',
  