[1/2] winhttp/tests: Fix a test failure on win2k.

[Marvin]

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
https://testbot.winehq.org/JobDetails.pl?Key=14399

Your paranoid android.


=== w8 (32 bit winhttp) ===
winhttp.c:864: Test failed: failed to send request 2148074273
winhttp.c:868: Test failed: failed to retrieve certificate context 12019
winhttp.c:873: Test failed: failed to retrieve key bitness 4317
winhttp.c:877: Test failed: failed to retrieve certificate info 12019
winhttp.c:890: Test failed: failed to receive response 12019
winhttp.c:895: Test failed: failed unexpectedly 12019
winhttp.c:896: Test failed: request failed unexpectedly 3735928559
winhttp.c:907: Test failed: WinHttpReadData failed: 12019.
winhttp.c:911: Test failed: read_size = 0