@@ -739,10 +739,10 @@ void uac_send_tm_callback(struct cell *t, int type, struct tmcb_params *ps)

 		goto error;

 	}

+	memset(&cred, 0, sizeof(struct uac_credential));

 	cred.realm  = auth.realm;

 	cred.user   = tp->s_auser;

 	cred.passwd = tp->s_apasswd;

-	cred.next   = NULL;

 	do_uac_auth(&tp->s_method, &tp->s_ruri, &cred, &auth, response);

 	new_auth_hdr=build_authorization_hdr(ps->code, &tp->s_ruri, &cred,