bug#43521: ports.test "non-revealed port is closed" breaks other tests

[Rob Browning]

Rob Browning <rlb@defaultvalue.org> writes:

> I believe the problem is that if the gc doesn't collect the port when
> the test calls (gc), then the test (which recognizes that possibility)
> calls close-fdes on the underlying fd.  However, the port still exists,
> and it may be garbage collected later, during a test that's using the
> same fd, which may break that test.

...and I'd have to think about it more carefully, but if dropping
the close-fdes call would completely prevent any subsequent test from
re-using the fd unsafely before the lingering port is collected, then
perhaps that's one potential fix.

-- 
Rob Browning
rlb @defaultvalue.org and @debian.org
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