Try to return a redirect instead a 400 for "not logged in" state
If the user is not logged in and submits a valid logout request
then just redirect the user to the RelayState in the request
indicating that the logout was successful. This provides a better
user experience.
https://fedorahosted.org/ipsilon/ticket/88
Signed-off-by: Rob Crittenden <rcritten@redhat.com>
Reviewed-by: Patrick Uiterwijk <puiterwijk@redhat.com>