Ticket #33947: comment-template.php.diff

trunk/src/wp-includes/comment-template.php

@@ -441 +441 @@
         $classes[] = ( empty( $comment->comment_type ) ) ? 'comment' : $comment->comment_type;
 
         // Add classes for comment authors that are registered users.
-        if ( $comment->user_id > 0 && $user = get_userdata( $comment->user_id ) ) {
+        if ( ! empty( $comment->user_id ) && $user = get_userdata( $comment->user_id ) ) {
                 $classes[] = 'byuser';
                 $classes[] = 'comment-author-' . sanitize_html_class( $user->user_nicename, $comment->user_id );
                 // For comment authors who are the author of the post