wined3d: Use backup swapchain DC for devices created with desktop window.

[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
http://testbot.winehq.org/JobDetails.pl?Key=21350

Your paranoid android.


=== WXPPROSP3 (32 bit device) ===
device.c:3541: Test failed: Failed to create REF device using desktop window, hr 0x8876086a.

=== W2K3R2SESP2 (32 bit device) ===
device.c:3541: Test failed: Failed to create REF device using desktop window, hr 0x8876086a.

=== WVISTAADM (32 bit device) ===
device.c:3541: Test failed: Failed to create REF device using desktop window, hr 0x8876086a.

=== W2K8SE (32 bit device) ===
device.c:3541: Test failed: Failed to create REF device using desktop window, hr 0x8876086a.

=== W7PRO (32 bit device) ===
device.c:3541: Test failed: Failed to create REF device using desktop window, hr 0x8876086a.

=== W7PROX64 (32 bit device) ===
device.c:3541: Test failed: Failed to create REF device using desktop window, hr 0x8876086a.

=== TEST64_W7SP1 (32 bit device) ===
device.c:3541: Test failed: Failed to create REF device using desktop window, hr 0x8876086a.

=== W7PROX64 (64 bit device) ===
device.c:3541: Test failed: Failed to create REF device using desktop window, hr 0x8876086a.

=== TEST64_W7SP1 (64 bit device) ===
device.c:3541: Test failed: Failed to create REF device using desktop window, hr 0x8876086a.