https://fedorahosted.org/sssd/ticket/911
[PATCH 1/2] Do not add a NULL host parsed from LDAP URI
Do not add a server into fail over in case its host name is NULL. Also
fixes a possible memleak in case be_fo_add_server() failed.
[PATCH 2/2] Only print server address if one is available
The second patch is kinda related. In fail over, it is possible that
fo_get_server_hostent() returns NULL in case we did not find any name
for the server. Therefore we must check its return value before
dereferencing it.