Fix handleLogout ignoring wreply override

Author: Dan Tsosie

modules/adfs/lib/IdP/ADFS.php

@@ -175,6 +175,13 @@ public static function sendLogoutResponse(SimpleSAML_IdP $idp, array $state) {
 	}
 
 	public static function receiveLogoutMessage(SimpleSAML_IdP $idp) {
+		// if a redirect is to occur based on wreply, we will redirect to url as
+		// this implies an override to normal sp notification.
+		if(isset($_GET['wreply']) && !empty($_GET['wreply'])) {
+			$idp->doLogoutRedirect(SimpleSAML_Utilities::checkURLAllowed($_GET['wreply']));
+			assert(FALSE);
+		}
+
 		$state = array(
 			'Responder' => array('sspmod_adfs_IdP_ADFS', 'sendLogoutResponse'),
 		);