[PATCH 4/4] dxgi/tests: Don't test functions directly when reporting GetLastError()

[Marvin]

Hi,

While running your changed tests, 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=83603

Your paranoid android.


=== w1064v1507 (32 bit report) ===

dxgi:
dxgi.c:5689: Test failed: Got unexpected message 0x31f, hwnd 000A0160, wparam 0x1, lparam 0.

=== w1064v1507 (64 bit report) ===

dxgi:
dxgi.c:5990: Test failed: Test 4: Got exstyle 0x108, expected 0x100.
dxgi.c:6006: Test failed: Test 4: Got exstyle 0x108, expected 0x100.
dxgi.c:6035: Test failed: Test 4: Got exstyle 0x108, expected 0x100.
dxgi.c:6064: Test failed: Test 4: Got exstyle 0x108, expected 0x100.
dxgi.c:6081: Test failed: Test 4: Got exstyle 0x108, expected 0x100.