Auth_Simple: Make sure that we do not return to an URL when a callback is specified.
Auth_Simple: Make sure that we do not return to an URL when a callback is specified.

cb8/saml2,ArtemTeleshev/php-saml2,simplesamlphp/saml2,madmatt/saml2,newmen/saml2,sitya/saml2,sgomez/saml2