[SSSD] [PATCH] Prevent segfault in failover code

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 This patch should fix a segfault in failover code introduced by my recent hostname expiration patch. I didn't realize that when using SRV records, server->common == NULL is legal as we don't have the server name resolved yet. The first hunk in the patch is completely unrelated to the crash. But I think it is correct, server->common == NULL should never mean that the server is resolved. Should I split the hunk (at least for stable branches sake) even if it is one-liner?