bug#6712: 24.0.50; `customize-rogue' error: Symbol's value as variable is void

[Chong Yidong]

"Drew Adams" <drew.adams@oracle.com> writes:

> (defcustom foo 'start
>   ""
>   :type '(choice  (const start) (const end))
>   :group 'foobar)
>  
> M-x customize-option foo
>  
> 1. Use the Value Menu to change the value to `end'.
> 2. Use the State menu to `Set for current session' (value is `end').
> 3. Use the State menu to `Set to Backup Value' (value is `start').
> 4. M-x customize-rogue
>  
> This error message appears:
>  
> "Symbol's value as variable is void: start"

Fixed; thanks for the report.