bug#7645: 23.2; ido commands failed to execute if there is some killed buffer

[martin rudalics]

> I have seen this bug too due to (buffer-list t) returning killed
> buffers. Unfortunately this isn't easy to reproduce.

Calling `buffer-list' with argument t is like calling it with no
argument at all ;-)

BTW, I'm running all my Emacsen for more than a month with

(defun check-buffer-list ()
  (dolist (buffer (buffer-list))
    (unless (buffer-live-p buffer)
      (message "Dead buffer %s" buffer))))

(add-hook 'post-command-hook 'check-buffer-list t)

and didn't find anything so far.  So please check whether the behavior
you observe might be caused by some other function.

martin