Bizarre server crash

[Brian Gallew]

I just discovered today that running DiabloII will crash XFree86 on Cygwin.
Here's the relevant section of the /usr/tmp/XWinrl.log:

! winWindowProc - WM_DISPLAYCHANGE - orig bpp: 32, last bpp: 32, new bpp: 16
! winWindowProc - WM_DISPLAYCHANGE - new width: 800 new height: 600
! winWindowProc - Disruptive change in depth
! winWindowProc - DialogBox returned: 786994
! winWindowProc - GetLastError: 0
! winReleasePrimarySurfaceShadowDDNL - Hello
! winReleasePrimarySurfaceShadowDDNL - Detached clipper
! winReleasePrimarySurfaceShadowDDNL - Released primary surface
! winCreatePrimarySurfaceShadowDDNL - Creating primary surface
! winCreatePrimarySurfaceShadowDDNL - Could not create primary surface:
887600e1
! winWindowProc - WM_DISPLAYCHANGE - orig bpp: 32, last bpp: 16, new bpp: 16
! winWindowProc - WM_DISPLAYCHANGE - new width: 800 new height: 600
! winWindowProc - Disruptive change in depth
! winWindowProc - Dialog box already exists
! winChangeDelthDlgProc - wParam == s_pScreenInfo->dwBPP
! winWindowProc - WM_ACTIVATE - Bad depth, trying to override window
activation
! winWindowProc - WM_DISPLAYCHANGE - orig bpp: 32, last bpp: 16, new bpp: 32
! winWindowProc - WM_DISPLAYCHANGE - new width: 1600 new height: 1200
! winReleasePrimarySurfaceShadowDDNL - Hello

I'm running 4.2.0-21, if it matters.