[Bug 38791] In server/queue.c, clipping cursor to empty rectangle is off by one pixel (affects "The Long Dark")

https://bugs.winehq.org/show_bug.cgi?id=38791

--- Comment #2 from Kevin Buhr  ---
Thanks for the info.  I wrote a test, and it ruined my beautiful patch:  it
looks like, in the empty rectangle case, Windows clips to the top-left *or* one
pixel off depending on the direction of the clip, and multiple clips (e.g.,
calling ClipCursor(rect) multiple times with the same empty rectangle) may
toggle between the two states.  So, this will require a little more work
anyway.