Ticket #20601: 20601.4.diff

src/wp-includes/class-wp.php

@@ -568 +568 @@
                 // We will 404 for paged queries, as no posts were found.
                 if ( ! is_paged() ) {
 
+                        // Don't 404 for authors without posts as long as they matched an author on this site.
+                        $author = get_query_var( 'author' );
+                        if ( is_author() && is_int( $author ) && is_user_member_of_blog( $author ) ) {
+                                status_header( 200 );
+                                return;
+                        }
+
                         // Don't 404 for these queries if they matched an object.
-                        if ( ( is_tag() || is_category() || is_tax() || is_author() || is_post_type_archive() ) && $wp_query->get_queried_object() ) {
+                        if ( ( is_tag() || is_category() || is_tax() || is_post_type_archive() ) && get_queried_object() ) {
                                 status_header( 200 );
                                 return;
                         }