Windows: char* is not a Unicode string

Windows: char* is not a Unicode string

Do not treat the output of NetbiosName() as a wide_t when
it is a char*.

Reviewed-on: http://gerrit.openafs.org/5549
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: Jeffrey Altman <jaltman@openafs.org>
(cherry picked from commit 4e02cb72be034ddad019d2ee70e8009ee762d9ed)

Change-Id: I03523441c3520f316232956d22d0f0a7203e4f36
Reviewed-on: http://gerrit.openafs.org/5568
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: Jeffrey Altman <jaltman@openafs.org>