MS: Add "Settings" link under "Network Admin" toolbar menu.

Props johnjamesjacoby.
Fixes #34287.


git-svn-id: https://develop.svn.wordpress.org/trunk@35156 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/admin-bar.php

@@ -434,6 +434,12 @@ function wp_admin_bar_my_sites_menu( $wp_admin_bar ) {
 			'title'  => __( 'Plugins' ),
 			'href'   => network_admin_url( 'plugins.php' ),
 		) );
+		$wp_admin_bar->add_menu( array(
+			'parent' => 'network-admin',
+			'id'     => 'network-admin-o',
+			'title'  => __( 'Settings' ),
+			'href'   => network_admin_url( 'settings.php' ),
+		) );
 	}
 
 	// Add site links