bug#3844: 23.1.50; Sample of code in manual does not compile

[Chong Yidong]

> On the page 
> http://www.gnu.org/software/emacs/manual/html_node/elisp/Simple-Macro.html#Simple-Macro
> is example usage of macro but macro called 'inc' does not compile in
> *scratch* by using C-x C-e.

I can't reproduce this problem.  Please provide the exact recipe for
seeing this bug.  What I tried is

1. emacs -Q
2. Insert this in the *scratch* buffer:
(defmacro inc (var)
  (list 'setq var (list '1+ var)))
3. C-x C-e

The word "inc" appears in the echo area.