Add @global annotations for wp-admin/*.

See #32444.


git-svn-id: https://develop.svn.wordpress.org/trunk@32642 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/includes/schema.php

@@ -333,7 +333,8 @@ $wp_queries = wp_get_db_schema( 'all' );
  * @since 1.5.0
  *
  * @global wpdb $wpdb WordPress database abstraction object.
- * @uses $wp_db_version
+ * @global int  $wp_db_version
+ * @global int  $wp_current_db_version
  */
 function populate_options() {
 	global $wpdb, $wp_db_version, $wp_current_db_version;