[PATCH] dxgi/tests: Fix a typo in ok() message.

[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=61095

Your paranoid android.


=== w1064v1809_2scr (32 bit report) ===

dxgi:
dxgi.c:4909: Test failed: Got unexpected message 0x31f, hwnd 000802F6, wparam 0x1, lparam 0.