Ticket #43661: unneccessary-call-to-get_post.diff

src/wp-includes/post-template.php

@@ -667 +667 @@
                         $classes[]   = 'attachment-' . str_replace( $mime_prefix, '', $mime_type );
                 } elseif ( is_page() ) {
                         $classes[] = 'page';
-
-                        $page_id = $wp_query->get_queried_object_id();
-
-                        $post = get_post( $page_id );
-
-                        $classes[] = 'page-id-' . $page_id;
+                        $classes[] = 'page-id-' . $post_id;
 
                         if ( get_pages(
                                 array(
-                                        'parent' => $page_id,
+                                        'parent' => $post_id,
                                         'number' => 1,
                                 )
                         ) ) {