Luke Leighton a15a3f95f2 fix for potential lsass.exe crashing due to negative response from ...

LsaLookupNames being incorrect.  this is a bit wierd: why would the
lsass.exe on the nt _client_ crash due to an LsaLookupNames response
from a samba _server_?

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srv_lsa.c

fix for potential lsass.exe crashing due to negative response from

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