This 'ifndef' macro is entered only when __sun__ is not defined. This test
will never fail since it is located inside of the 'else' branch of an 'if'
macro which tests whether __sun__ is defined. It has had no effect since
the merge at 436f66b7.
Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Junio C Hamano <gitster@pobox.com>