mshtml: Implement HTMLElement_get_children.

[Jacek Caban]

Hi,

> +    elem_vector buf = {NULL, 0, 8};
> +
> +    TRACE("(%p)->(%p)\n", This, p);
> +
> +    buf.buf = mshtml_alloc(buf.size*sizeof(HTMLElement**));


elem_vector is a self-resizable table, but in this case you know the size while creating it from nsIDOMNodeList::GetLength. I'd suggest to use it here during creation of buf to avoid useless memory reallocations.

Thanks,
	Jacek