[Bug 28666] Spa Mania: Read from NULL when toggling fullscreen mode

http://bugs.winehq.org/show_bug.cgi?id=28666

--- Comment #3 from Josh Juran  2011-10-12 16:17:25 CDT ---
Created attachment 36865
  --> http://bugs.winehq.org/attachment.cgi?id=36865
Null-check device->swapchains before dereference

This patch should not be applied as is.

With this patch, it's possible to click the Fullscreen checkbox without
necessarily crashing the game.  Usually the first click succeeds.  Repeated
clicks tend to crash the game eventually, if not sooner.  Also, sometimes the
cursor disappears, rendering the game unplayable (if using the software
cursor).