fdopen-tests: port to Tru64
* tests/test-fdopen.c (main): Don't invoke fdopen on a file
- descriptors that is not open, as POSIX doesn't specify the
+ descriptor that is not open, as POSIX doesn't specify the
resulting behavior and the test does not work on Tru64.
Problem reported by Steven M. Schweda in:
http://lists.gnu.org/archive/html/bug-gnulib/2014-01/msg00079.html