NPE in ViewCreator thread setting public keys into a NetView

  public void testNullPublicKeysNotRetained() throws Exception {
    NetView view = new NetView(members.get(0), 2, new ArrayList<>(members));
    setFailureDetectionPorts(view);

    NetView newView = new NetView(view, 3);
    for (InternalDistributedMember member: view.getMembers()) {
      view.setPublicKey(member, null);
    }
    newView.setPublicKeys(view);
    for (InternalDistributedMember member: view.getMembers()){
      assertNull(newView.getPublicKey(member));
      assertNull(view.getPublicKey(member));
    }
  }