Coding Standards: Include one space after function keyword for closures.

Note: This is enforced by WPCS 3.0.0.

Reference: [https://github.com/WordPress/WordPress-Coding-Standards/pull/2328 WPCS: PR #2328 Core: properly check formatting of function declaration statements].

Props jrf.
See #59161, #58831.

git-svn-id: https://develop.svn.wordpress.org/trunk@56559 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-http.php

@@ -463,7 +463,7 @@ class WP_Http {
 			if ( $value instanceof WP_Http_Cookie ) {
 				$attributes                 = array_filter(
 					$value->get_attributes(),
-					static function( $attr ) {
+					static function ( $attr ) {
 						return null !== $attr;
 					}
 				);