Re: [PATCH v4 0/3] MR1918: Draft: Implement HTMLDocument_get_body and HTMLDocument_get_all for document fragments

[Jinoh Kang (＠iamahuman)]

Jinoh Kang (@iamahuman) commented about dlls/mshtml/htmldoc.c:
>          TRACE("Could not get body: %08lx\n", nsres);
>          return E_UNEXPECTED;
>      }
> - }else {
> -
>    nsAString nsnode_name;
> -
>    nsIDOMDocumentFragment *frag;
> -
> -
>    hres = nsIDOMNode_QueryInterface(This->node.nsnode, &IID_nsIDOMDocumentFragment, (void**)&frag);
> -
>    if(hres == S_OK) {
> -
>        nsAString_InitDepend(&nsnode_name, L"BODY");
> -
>        nsIDOMDocumentFragment_QuerySelector(frag, &nsnode_name, (nsIDOMElement **) &nsbody);

Do we want to use QueryInterface here too? cc/ @insn