oleaut32: add OleLoadPictureFile stub

[Andrew Eikum]

> + * OleLoadPictureFile (OLEAUT32.422)
> + */
> +HRESULT WINAPI OleLoadPictureFile(VARIANT file, LPDISPATCH *picture)
> +{
> +    FIXME("(%p),stub!\n", picture);
> +    return ERROR_CALL_NOT_IMPLEMENTED;
> +}
> +
> +/***********************************************************************

This should return an HRESULT, right? Probably E_NOTIMPL.

Andrew