[Bug 51999] Dragon Age Inquisition crashes with vulkan renderer

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51999

--- Comment #3 from Zebediah Figura  ---
Thanks. It looks like thread 0810 calls d3d11_swapchain_SetFullscreenState() on
a swapchain whose device window was created by 07b0. While processing some
other boring message related to window motion, 07b0 calls
d3d11_swapchain_GetDesc(), and this deadlocks waiting for the wined3d mutex.

I don't think we need to protect the swapchain desc with a mutex, do we? I'll
prepare a patch.