[PATCH] d3d8/tests: Flush events after sending SC_MAXIMIZE.

[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=58921

Your paranoid android.


=== w1064v1809_ar (32 bit report) ===

d3d8:
device.c:1672: Test failed: Reset failed, hr 0x88760873.
device.c:1674: Test failed: TestCooperativeLevel failed, hr 0x88760869.

=== w1064v1809_zh_CN (32 bit report) ===

d3d8:
device.c:3797: Test failed: Expected device window style 0x14cf0000, got 0x14000000.
device.c:3801: Test failed: Expected device window extended style 0x108, got 0x8.
device.c:3815: Test failed: Client rect and window rect are equal.
device.c:6621: Test failed: Failed to update texture, hr 0x80004005, case 6.
device.c:6621: Test failed: Failed to update texture, hr 0x80004005, case 7.