mshtml: Call HTMLDOMNode_Init directly in HTMLCommentElement_Create.

dlls/mshtml/htmlcomment.c

@@ -200,9 +200,7 @@ HRESULT HTMLCommentElement_Create(HTMLDocumentNode *doc, nsIDOMNode *nsnode, HTM
     ret->IHTMLCommentElement_iface.lpVtbl = &HTMLCommentElementVtbl;
 
     HTMLElement_Init(&ret->element, doc, NULL, &HTMLCommentElement_dispex);
-
-    nsIDOMNode_AddRef(nsnode);
-    ret->element.node.nsnode = nsnode;
+    HTMLDOMNode_Init(doc, &ret->element.node, nsnode);
 
     *elem = &ret->element;
     return S_OK;

dlls/mshtml/htmlelem.c

@@ -1776,7 +1776,8 @@ void HTMLElement_Init(HTMLElement *This, HTMLDocumentNode *doc, nsIDOMHTMLElemen
         nsIDOMHTMLElement_AddRef(nselem);
     This->nselem = nselem;
 
-    HTMLDOMNode_Init(doc, &This->node, (nsIDOMNode*)nselem);
+    if(nselem)
+        HTMLDOMNode_Init(doc, &This->node, (nsIDOMNode*)nselem);
 
     ConnectionPointContainer_Init(&This->cp_container, (IUnknown*)&This->IHTMLElement_iface);
 }