Menus: Make the `$object_id` parameter of `_wp_delete_post_menu_item()` required, for consistency with `_wp_delete_tax_menu_item()`.

The function is private (only intended for core usage) and is hooked to the `delete_post` action, which always passes a non-zero post ID.

Follow-up to [14295], [48794].

See #50343.
Built from https://develop.svn.wordpress.org/trunk@48795


git-svn-id: http://core.svn.wordpress.org/trunk@48557 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/nav-menu.php

@@ -1038,7 +1038,7 @@ function wp_get_associated_nav_menu_items( $object_id = 0, $object_type = 'post_
  *
  * @param int $object_id The ID of the original object being trashed.
  */
-function _wp_delete_post_menu_item( $object_id = 0 ) {
+function _wp_delete_post_menu_item( $object_id ) {
 	$object_id = (int) $object_id;
 
 	$menu_item_ids = wp_get_associated_nav_menu_items( $object_id, 'post_type' );

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-alpha-48794';
+$wp_version = '5.6-alpha-48795';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.