winbindd: handling of failed lookupsids in wb_lookupsids_single_done()

winbindd: handling of failed lookupsids in wb_lookupsids_single_done()

If lookupsid() failed with NT_STATUS_SOME_NOT_MAPPED or
NT_STATUS_NONE_MAPPED, if we didn't get a domain name, don't add a fake
domain to the lsa_RefDomainList. Just set the domain index in the
translated name to UINT32_MAX.

It's up to callers like wb_sids2xids to handle such failed mappings and
wb_sids2xids_lookupsids_done() has been updated in a previous commit to
deal with it.

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>