Index: src/wp-cron.php
===================================================================
--- src/wp-cron.php	(revision 44483)
+++ src/wp-cron.php	(working copy)
@@ -18,6 +18,10 @@
 
 ignore_user_abort( true );
 
+/* Don't make the request block till we finish, if possible. */
+if ( function_exists( 'fastcgi_finish_request' ) && version_compare( phpversion(), '7.0.16', '>=' ) )
+	fastcgi_finish_request();
+
 if ( ! empty( $_POST ) || defined( 'DOING_AJAX' ) || defined( 'DOING_CRON' ) ) {
 	die();
 }