PATCH: Get rid of superfluous dup() and close() calls.

[Martin Wilck]

Just a side issue: On my system (PIII 1GHz), one pair of dup()/close()
calls takes about 1us. Not all too much, but it may matter in
IO-intensive applications.

Of course I am not arguing in favor of sacrificing stability for a tiny
bit of performance. Just another small pro for my patch :-)

Martin

-- 
Martin Wilck                Phone: +49 5251 8 15113
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