Users: Pass the ID of the user that was logged out to the `wp_logout` action.

Props donmhico, figureone, TimothyBlynJacobs, rebasaurus.
Fixes #49533.
Built from https://develop.svn.wordpress.org/trunk@47553


git-svn-id: http://core.svn.wordpress.org/trunk@47328 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/pluggable.php

@@ -573,16 +573,21 @@ if ( ! function_exists( 'wp_logout' ) ) :
 	 * @since 2.5.0
 	 */
 	function wp_logout() {
+		$user_id = get_current_user_id();
+
 		wp_destroy_current_session();
 		wp_clear_auth_cookie();
 		wp_set_current_user( 0 );
 
 		/**
-		 * Fires after a user is logged-out.
+		 * Fires after a user is logged out.
 		 *
 		 * @since 1.5.0
+		 * @since 5.5.0 Added the `$user_id` parameter.
+		 *
+		 * @param int $user_id ID of the user that was logged out.
 		 */
-		do_action( 'wp_logout' );
+		do_action( 'wp_logout', $user_id );
 	}
 endif;
 

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-alpha-47552';
+$wp_version = '5.5-alpha-47553';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.