[PATCH] get_interfaces() return early causes segfault in winbind

[David Mulder]

Regression caused by da68a1b2f417ec82ea4ed3e7a4d867cef8ca8f93.

If we return early, be sure to point pifaces to the returned ifaces if
we have 1 return. Otherwise winbind segfaults in load_interfaces() if
there is only 1 interface, because we say there is 1 interface, but
ifaces is NULL (load_interfaces() tries to smb_memdup NULL of iface size 1).

Seen on a machine where dhcp was slow to return, so winbind crashed on
started due to lo being the only interface available on start.

Please review and push if ok!

-- 
David Mulder
SUSE Labs Software Engineer - Samba
dmulder at suse.com
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)

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