Fix for OPENAM-3707
Adding extra emptiness check to ensure we don't try to retrieve
affiliationDescriptor for "".

git-svn-id: https://svn.forgerock.org/openam/trunk/openam@8269 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d
OPENAM-3709/CR-3131-Grammatical Error in High Availability Section


git-svn-id: https://svn.forgerock.org/openam/trunk/openam@8271 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d