Emacs crash

[Rusi]

Can someone check this recipe for crashing emacs please?

Ubuntu 16.4 running vanilla Unity -- yes this is likely related to X/WM stuff
emacs 24.5.1

1 Start emacs with
$ emacs --daemon

init contains just this 2 line function:

(defun kill-later ()
  (run-with-timer 1 nil 'save-buffers-kill-emacs))


2. 
$ emacsclient -n -c somefile
[somefile exists]

3. Write something there (ie dirty it and get a '*' in modeline)

4. Remove the frame by clicking the X in the frame

5. Try to kill emacs with
$ emacsclient -c  -e '(kill-later)'

6. top shows emacs running at 100% usage

7. killing it in top causes an apport crash

Note 1 Why is kill-later defined in that round-about way?
Because directly invoking save-buffers-kill-emacs from emacsclient
makes the -n option ignored
This in turn causes the save-buffers-kill-emacs to say "You have clients"

Note 2 If an emacs frame is present the save-buffer dialog appears as expected
and there is no issue