Commit 7a22912e "Remove Shadow DirectDraw engine" contained a typo, changing
the fullscreen && DirectDraw check in WM_DISPLAYCHANGE to fullscreen ||
DirectDraw
This causes disruptive depth changes to be improperly handled
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Reviewed-by: Colin Harrison <colin.harrison@virgin.net>