Formatting: `wp_make_link_relative()` should return an empty string if no path is present in the link.

Props bcworkz, MikeHansenMe, chriscct7, SergeyBiryukov.
Fixes #26819.
Built from https://develop.svn.wordpress.org/trunk@35497


git-svn-id: http://core.svn.wordpress.org/trunk@35461 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/formatting.php

@@ -3621,7 +3621,7 @@ function tag_escape( $tag_name ) {
  * @return string Absolute path.
  */
 function wp_make_link_relative( $link ) {
-	return preg_replace( '|^(https?:)?//[^/]+(/.*)|i', '$2', $link );
+	return preg_replace( '|^(https?:)?//[^/]+(/?.*)|i', '$2', $link );
 }
 
 /**

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-beta2-35496';
+$wp_version = '4.4-beta2-35497';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.