Oops in domain_namemap.c:lookupsmbpwntnam

[Luke Kenneth Casson Leighton]

> I'm afraid Luke wrote (broke ?:-) this code and neither
> Andrew or I have time to fix what he's doing to the HEAD
> branch right now.
> 
> Luke - time to stop adding code and fix some bugs :-) :-) :-)
> 

with andrej's and everyone's help, the issues are covered.  logic never
was one of my strong points, i think about it too much and that seems to
get in the way.