IdP/SAML2: Avoid unset-variable warnings during IdP-initiated SSO.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2428 44740490-163a-0410-bde0-09ae8108e29a

modules/saml/lib/IdP/SAML2.php

@@ -171,6 +171,8 @@ class sspmod_saml_IdP_SAML2 {
 
 			$requestId = NULL;
 			$IDPList = array();
+			$ProxyCount = NULL;
+			$RequesterID = NULL;
 			$forceAuthn = FALSE;
 			$isPassive = FALSE;
 			$consumerURL = NULL;