oledb32: Implement GetConversionSize DBTYPE_WSTR->DBTYPE_WSTR

[Nikolay Sivov]

On 4/20/2013 13:43, Alistair Leslie-Hughes wrote:
> Hi,
>
>
> Changelog:
>     oledb32: Implement GetConversionSize DBTYPE_WSTR->DBTYPE_WSTR
>
>
> Best Regards
>  Alistair Leslie-Hughes
Please add a test when caller supplies source length, at least one case 
is interesting - supplied length is less than lstrlenW result.
Another case would be embedded nulls and source length larger than null 
terminated length.