Embeds: Disable embeds on deactivated Multisite sites.

Props xknown, whyisjake, zieladam, peterwilsoncc.

Built from https://develop.svn.wordpress.org/branches/5.5@49374


git-svn-id: http://core.svn.wordpress.org/branches/5.5@49133 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/embed.php

@@ -611,6 +611,11 @@ function get_oembed_response_data_for_url( $url, $args ) {
 		$sites = get_sites( $qv );
 		$site  = reset( $sites );
 
+		// Do not allow embeds for deleted/archived/spam sites.
+		if ( ! empty( $site->deleted ) || ! empty( $site->spam ) || ! empty( $site->archived ) ) {
+			return false;
+		}
+
 		if ( $site && get_current_blog_id() !== (int) $site->blog_id ) {
 			switch_to_blog( $site->blog_id );
 			$switched_blog = true;

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5.2-alpha-49373';
+$wp_version = '5.5.2-alpha-49374';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.