Check $post->post_status directly in _update_posts_count_on_delete() for better performance.

props pento.
fixes #27952.
Built from https://develop.svn.wordpress.org/trunk@29667


git-svn-id: http://core.svn.wordpress.org/trunk@29441 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/ms-blogs.php

@@ -917,7 +917,9 @@ function _update_blog_date_on_post_delete( $post_id ) {
  * @param int $post_id Post ID.
  */
 function _update_posts_count_on_delete( $post_id ) {
-	if ( 'publish' !== get_post_field( 'post_status', $post_id ) ) {
+	$post = get_post( $post_id );
+
+	if ( ! $post || 'publish' !== $post->post_status ) {
 		return;
 	}