If we have a NULL variant which will be converted to a non-fixed sized
type (DBTYPE_WSTR) then we just return S_OK.
Signed-off-by: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>