typo in wp-trackback

[Mittineague]

This doesn't seem to be causing any problems, but it doesn't look right. (my comment added)

if (empty($title) && empty($tb_url) && empty($blog_name)) {
	// If it doesn't look like a trackback at all...
	wp_redirect(get_permalink($tb_id));
	exit;
}
/** second !empty($tb_url) is unecessary, SHOULD BE $blog_name or ?? **/
if ( !empty($tb_url) && !empty($title) && !empty($tb_url) ) {
	header('Content-Type: text/xml; charset=' . get_option('blog_charset') );

[markjaquith]

It looks like it should be $blog_name

But according to the TrackBack spec, blog_name, excerpt, and title are all optional. The only required field is url

For now, I'd just remove the redundant check.

[markjaquith]

Patch removes redundant check. Does not change functionality.

[ryan]

(In [4801]) Remove redundant check. Props Mittineague. fixes #3665