Allow square brackets in a URL when it's sanitised for a redirect. Square brackets are valid in query parameters and IPv6 addresses.

Fixes #17052
Props voldemortensen

Built from https://develop.svn.wordpress.org/trunk@30683


git-svn-id: http://core.svn.wordpress.org/trunk@30673 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/pluggable.php

@@ -1190,7 +1190,7 @@ if ( !function_exists('wp_sanitize_redirect') ) :
  * @return string redirect-sanitized URL
  **/
 function wp_sanitize_redirect($location) {
-	$location = preg_replace('|[^a-z0-9-~+_.?#=&;,/:%!*]|i', '', $location);
+	$location = preg_replace('|[^a-z0-9-~+_.?#=&;,/:%!*\[\]]|i', '', $location);
 	$location = wp_kses_no_null($location);
 
 	// remove %0d and %0a from location

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.1-beta2-30682';
+$wp_version = '4.1-beta2-30683';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.