msvcrt/tests: Make test_dup2() static.

[Francois Gouget]

On Wed, 23 Jun 2010, testbot at testbot.winehq.org wrote:

> Hi,
> 
> While running your changed tests on Windows, I think I found new failures.
> Being a bot and all I'm not very good at pattern recognition, so I might be
> wrong, but could you please double-check?
> Full results can be found at
> http://testbot.winehq.org/JobDetails.pl?Key=2829
[...]
> === W98SE (32 bit file) ===
> file.c:988: Test failed: smaller size block: Wrong error data ()
> file.c:996: Test failed: smaller size block: Stdout file shouldn't contain data

This test does not have a history of failing on the Win98SE systems at 
test.winehq.org. Yet I don't see how this could be related to my patch 
since it happens in another part of the test.

http://test.winehq.org/data/tests/msvcrt:file.html

-- 
Francois Gouget <fgouget at free.fr>              http://fgouget.free.fr/
  Good judgment comes from experience, and experience comes from bad judgment
                               -- Barry LePatner