bug#10348: 24.0.92; Save and load window states

[Juri Linkov]

> Debugger entered--Lisp error: (invalid-read-syntax "#")

There was another error in `window--state-get-1':

(setq mark-even-if-inactive nil)

(window-state-get)

Debugger entered--Lisp error: (mark-inactive)
  signal(mark-inactive nil)
  mark()
  window--state-get-1(#<window 3 on *scratch*> nil)
  window-state-get()
  eval((window-state-get) nil)
  eval-last-sexp-1(nil)
  eval-last-sexp(nil)
  call-interactively(eval-last-sexp nil nil)

That's because `(mark)' should be used with the `t' arg as `(mark t)'.
I installed the fix.