[O] Exporting description list without description

[Yasushi SHOJI]

Hi,

I'm not sure this is a bug or something else.  But the following two
list behave differently when exported.  The fist one inserts a newline
between one and two.

Is there any reason to do that?  Yes, they are description list items
without description.  So there isn't much use but stil..

    - one ::
    - two ::

    - one :: This is 1
    - two :: This is 2

Thanks,
-- 
             yashi