bug#16793: window-state-put needs a live window

[martin rudalics]

> Martin suggests that frameset--restore should check that the root
> window of the matching frame found is alive, and if not, discard that
> frame and create a new one. That's doable, but it seems less than
> optimal, from both a coding and UI perspective.

That was a misunderstanding.  Your initial scenario was

  emacs -Q --eval "(setq debug-on-error t)"
  C-x 2
  C-x r f a
  C-x 5 2
  C-u C-x r j a

so I thought you wanted to create a new frame anyway ;-)

martin