bug#19102: 24.4; outline-move-subtree-up/down error at last and second-last subtree

[Eli Zaretskii]

> From: Stephen Berman <stephen.berman@gmx.net>
> Date: Wed, 19 Nov 2014 14:17:25 +0100
> Cc: 19102@debbugs.gnu.org
> 
> The following patch (against master) seems to fix this, though it could
> probably be done more elegantly.

Thanks.  Can you explain why the problem happened in the first place?

> +     ;; Make sure we can move forward when needed (bug#19102).

Please only mention the bug number in comments if the code or the rest
of the comment text do not speak for themselves, and there are some
subtle issues here that can only be understood by reading the bug
discussion.  Otherwise, the bug number will appear in the commit log,
so no need to put it in the code.