[1/2] wininet/tests: Add test for using NULL as proxy server.

[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=17154

Your paranoid android.


=== w1064 (32 bit internet) ===
internet.c:1507: Test failed: Got 0, expected 1223 (12042)
internet.c:1514: Test failed: Got 0, expected 1223 (12042)
internet.c:1525: Test failed: Got 0, expected 1223 (12042)
internet.c:1074: Test failed: expected ret == 0, got 87

=== w1064 (64 bit internet) ===
internet.c:1507: Test failed: Got 0, expected 1223 (12042)
internet.c:1514: Test failed: Got 0, expected 1223 (12042)
internet.c:1525: Test failed: Got 0, expected 1223 (12042)
internet.c:1074: Test failed: expected ret == 0, got 87