Networks and Sites: Don't display an empty Menu Settings section in network admin if there are no items.

This accounts for returning an empty array from the `mu_menu_items` filter.

Props dlh.
Fixes #49977.
Built from https://develop.svn.wordpress.org/trunk@47616


git-svn-id: http://core.svn.wordpress.org/trunk@47391 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/network/settings.php

@@ -438,11 +438,6 @@ if ( isset( $_GET['updated'] ) ) {
 		}
 		?>
 
-		<h2><?php _e( 'Menu Settings' ); ?></h2>
-		<table id="menu" class="form-table">
-			<tr>
-				<th scope="row"><?php _e( 'Enable administration menus' ); ?></th>
-				<td>
 		<?php
 		$menu_perms = get_site_option( 'menu_items' );
 		/**
@@ -462,6 +457,14 @@ if ( isset( $_GET['updated'] ) ) {
 		 */
 		$menu_items = apply_filters( 'mu_menu_items', array( 'plugins' => __( 'Plugins' ) ) );
 
+		if ( $menu_items ) :
+			?>
+			<h2><?php _e( 'Menu Settings' ); ?></h2>
+			<table id="menu" class="form-table">
+				<tr>
+					<th scope="row"><?php _e( 'Enable administration menus' ); ?></th>
+					<td>
+						<?php
 						echo '<fieldset><legend class="screen-reader-text">' . __( 'Enable menus' ) . '</legend>';
 
 						foreach ( (array) $menu_items as $key => $val ) {
@@ -473,6 +476,9 @@ if ( isset( $_GET['updated'] ) ) {
 					</td>
 				</tr>
 			</table>
+			<?php
+		endif;
+		?>
 
 		<?php
 		/**

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-alpha-47615';
+$wp_version = '5.5-alpha-47616';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.