reply link is rendered but broken if user doesn't have permission to post a reply with nodecomment

Just noticed this and have come up with a fix which I've committed.

AF was checking the comment setting in a way that accommodates both nodecomment and Drupal comments, but the access check which decides whether to output a reply link only checks for standard comments permission:

function advanced_forum_get_reply_link($node) {
  $reply_link = array();

  // Give nodecomment (if installed) first shot at the comment setting
  $comment_setting = (empty($node->node_comment)) ? $node->comment : $node->node_comment;

  // Anchor to the form is depends on if reply is a node or a comment.
  $fragment = (empty($node->node_comment)) ? 'comment-form'  : 'node-form';

  if ($comment_setting == COMMENT_NODE_READ_WRITE) {
    if (user_access('post comments')) {
      // .. display reply link
    }
    else {
      // User does not have access to post replies on this node.
      return 'reply-forbidden';
    }

This was resulting in a reply link being output that simply linked to:

http://example.com/#node-form

...which obviously didn't do anything very useful.