[PATCH] ole32: handle length=0 in save datacache

[Dmitry Timoshkov]

Marcus Meissner <marcus at jet.franken.de> wrote:

> The ole2 test crashes for me, reason is that length is 0
> and we use length-1 for accessing whats returned.
...
> +        if (!length)
> +            return DV_E_CLIPFORMAT;

The test intentionally creates the storage streams with length
field set to 0, and as the tests show this is not an error.
So the fix should be probably different.

-- 
Dmitry.