bug#7234: 24.0.50; strange message after text-scale-adjust

[Eli Zaretskii]

> From: Kenichi Handa <handa@m17n.org>
> Date: Mon, 18 Oct 2010 13:09:29 +0900
> Cc: 
> 
>   ESC : (text-scale-adjust 1) RET C-b
> 
> "(2)" is shown in the echo area.
> 
>   ESC : (text-scale-adjust 1) RET C-f
> 
> "(6)" is shown.  When I type C-e instead of C-f above, "(5)"
> is shown.  It seems that the number shown corresponds to the
> character code of the last command.

That's because text-scale-adjust does at its end

    (push ev unread-command-events)))

and `push' returns its first argument.