Checked to make sure we had a valid samlRequestDom object and returned the callback with an error if we do not. Was running into a problem where if SAMLRequest was not an actual SAML request, samlRequestDom was undefinded and xpath crashed the server.
Checked to make sure we had a valid samlRequestDom object and returned the callback with an error if we do not. Was running into a problem where if SAMLRequest was not an actual SAML request, samlRequestDom was undefinded and xpath crashed the server.

Den-dp/node-samlp,CoorpAcademy/node-samlp,vandernorth/node-samlp,vandernorth/node-samlp,auth0/node-samlp