Index: src/wp-admin/includes/network.php
===================================================================
--- src/wp-admin/includes/network.php	(リビジョン 43909)
+++ src/wp-admin/includes/network.php	(作業コピー)
@@ -14,7 +14,7 @@
  *
  * @global wpdb $wpdb WordPress database abstraction object.
  *
- * @return Whether a network exists.
+ * @return string|false Base domain if network exists, false otherwise.
  */
 function network_domain_check() {
 	global $wpdb;