bug#9318: 23.3.50; The first call of encode-coding-region() returns wrong result

[Kazuhiro Ito]

> When I start Emacs and evaluate the below code, unexpected result returns.

> (let ((func (lambda ()
>             (with-temp-buffer
>               (mapc 'insert '(166 25339))
>               (encode-coding-region (point-min) (point-max) 'ctext-unix)
>               (buffer-string)))))
>   (cons (funcall func)
>       (funcall func)))
> -> ("¦拻^@^@^@^@^@^@^@^@^@^@" . "^[$(D\"C^[$(H*f^[(B") 

> car of the result is not constant.

I noticed this problem is not Windows specific.  I confirmed that it
is reproducible in Emacs 23.3.1 (build by pkgsrc) on NetBSD/amd64 via
SSH from remote host.  But it doesn't occur on openSUSE 11.3.

-- 
Kazuhiro Ito