bug#5319: 23.1; emacs crash in org-indent-mode

[Changyuan Yu <reivzy@gmail.com>]

1. install org-mode-6.33f
2. start emacs: emacs -Q
3. create a buffer with some text then swith to org-indent-mode, as below

C-x b buf <return>
* a <return>
C-u 100 <return>
** b <return>
c <return>
M-x org-mode
M-x org-indent-mode

4. then emacs crash. emacs frame height should small than 100
   to make emacs crash.


In GNU Emacs 23.1.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.18.5)
 of 2010-01-05 on ez965
Windowing system distributor `The X.Org Foundation', version 11.0.10703902
configured using `configure  '--prefix=/home/reiv/opt/emacs-23.1''

Important settings:
  value of $LC_ALL: en_US.UTF-8
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: nil
  value of $XMODIFIERS: @im=SCIM
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
M-x r e p o r <tab> e <backspace> <return>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.