Another build failure for amd64

[Paul Goyette <paul%whooppee.com@localhost>]

With MKDEBUG=yes I get the following:

=======  1 extra files in DESTDIR  =========
Files in DESTDIR but missing from flist.
File is obsolete or flist is out of date ?
------------------------------------------
./usr/libdata/debug/usr/tests/lib/libc/stdlib/t_mbtowc.debug
=========  end of 1 extra files  ===========
*** [checkflist] Error code 1


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