Multisite: Use `get_networks()` instead of a direct query in `get_admin_users_for_domain()`.

Props spacedmonkey.
Fixes #41806.

Built from https://develop.svn.wordpress.org/trunk@41664


git-svn-id: http://core.svn.wordpress.org/trunk@41498 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/ms-deprecated.php

@@ -429,10 +429,17 @@ function get_admin_users_for_domain( $domain = '', $path = '' ) {
 
 	global $wpdb;
 
-	if ( ! $domain )
+	if ( ! $domain ) {
 		$network_id = get_current_network_id();
-	else
-		$network_id = $wpdb->get_var( $wpdb->prepare( "SELECT id FROM $wpdb->site WHERE domain = %s AND path = %s", $domain, $path ) );
+	} else {
+		$_networks  = get_networks( array(
+			'fields' => 'ids',
+			'number' => 1,
+			'domain' => $domain,
+			'path'   => $path,
+		) );
+		$network_id = ! empty( $_networks ) ? array_shift( $_networks ) : 0;
+	}
 
 	if ( $network_id )
 		return $wpdb->get_results( $wpdb->prepare( "SELECT u.ID, u.user_login, u.user_pass FROM $wpdb->users AS u, $wpdb->sitemeta AS sm WHERE sm.meta_key = 'admin_user_id' AND u.ID = sm.meta_value AND sm.site_id = %d", $network_id ), ARRAY_A );

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.9-alpha-41663';
+$wp_version = '4.9-alpha-41664';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.