+/**
+ * Executes changes made in WordPress 4.4.0.
+ *
+ * @since 4.4.0
+ *
+ * @global int $wp_current_db_version Current version.
+ * @global wpdb $wpdb WordPress database abstraction object.
+ */
+function upgrade_440() {
+ global $wp_current_db_version, $wpdb;
+
+ if ( $wp_current_db_version < 34030 ) {
+ $wpdb->query( "ALTER TABLE {$wpdb->options} MODIFY option_name VARCHAR(191)" );
+ }
+
+ // Remove the unused 'add_users' role.
+ $roles = wp_roles();
+ foreach ( $roles->role_objects as $role ) {
+ if ( $role->has_cap( 'add_users' ) ) {
+ $role->remove_cap( 'add_users' );
+ }
+ }
+}
+