saml:SP: Add logout status to state array.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2760 44740490-163a-0410-bde0-09ae8108e29a

modules/saml/www/sp/saml2-logout.php

@@ -55,6 +55,7 @@ if ($message instanceof SAML2_LogoutResponse) {
 	}
 
 	$state = SimpleSAML_Auth_State::loadState($relayState, 'saml:slosent');
+	$state['saml:sp:LogoutStatus'] = $message->getStatus();
 	SimpleSAML_Auth_Source::completeLogout($state);
 
 } elseif ($message instanceof SAML2_LogoutRequest) {