Richard Stallman <rms@gnu.org> writes:

>     while using ielm in emacs 23.0.50 and emacs 22.1, any code run in ielm
>     with a comment will cause ielm to fail:
>
>     ELISP> (message "hi") ;;ouch
>     *** IELM error ***  More than one sexp in input
>
> This isn't a terribly important bug, but it would be nice
> to fix it.

This simple patch fixes it.