mshtml: Added IHTMLInputElement_get_form method implementation. (try 2)

[Jacek Caban]

Hi Zhenbo,

On 07/29/14 05:24, Zhenbo Li wrote:
> +    nsres = nsIDOMHTMLInputElement_GetForm(This->nsinput, &nsform);
> +    if (NS_FAILED(nsres) || nsform == NULL) {
> +        ERR("GetForm failed: %08x, nsform: %p\n", nsres, nsform);
> +        p = NULL;

Not setting output value would be probably fine in this case, but if you
do, please do it right (*p = NULL;).

Jacek