mshtml: Store HTMLElement pointer in HTMLTextContainer.

dlls/mshtml/htmlbody.c

@@ -441,7 +441,7 @@ void HTMLBodyElement_Create(HTMLElement *element)
     ret->lpHTMLBodyElementVtbl = &HTMLBodyElementVtbl;
     ret->element = element;
 
-    HTMLTextContainer_Init(&ret->text_container, (IUnknown*)HTMLBODY(ret));
+    HTMLTextContainer_Init(&ret->text_container, element);
 
     nsres = nsIDOMHTMLElement_QueryInterface(element->nselem, &IID_nsIDOMHTMLBodyElement,
                                              (void**)&ret->nsbody);

dlls/mshtml/htmltextcont.c

@@ -40,19 +40,19 @@ static HRESULT WINAPI HTMLTextContainer_QueryInterface(IHTMLTextContainer *iface
                                                        REFIID riid, void **ppv)
 {
     HTMLTextContainer *This = HTMLTEXTCONT_THIS(iface);
-    return IUnknown_QueryInterface(This->impl, riid, ppv);
+    return IHTMLElement_QueryInterface(HTMLELEM(This->element), riid, ppv);
 }
 
 static ULONG WINAPI HTMLTextContainer_AddRef(IHTMLTextContainer *iface)
 {
     HTMLTextContainer *This = HTMLTEXTCONT_THIS(iface);
-    return IUnknown_AddRef(This->impl);
+    return IHTMLElement_AddRef(HTMLELEM(This->element));
 }
 
 static ULONG WINAPI HTMLTextContainer_Release(IHTMLTextContainer *iface)
 {
     HTMLTextContainer *This = HTMLTEXTCONT_THIS(iface);
-    return IUnknown_Release(This->impl);
+    return IHTMLElement_Release(HTMLELEM(This->element));
 }
 
 static HRESULT WINAPI HTMLTextContainer_GetTypeInfoCount(IHTMLTextContainer *iface, UINT *pctinfo)
@@ -175,8 +175,8 @@ static const IHTMLTextContainerVtbl HTMLTextContainerVtbl = {
     HTMLTextContainer_get_onscroll
 };
 
-void HTMLTextContainer_Init(HTMLTextContainer *This, IUnknown *impl)
+void HTMLTextContainer_Init(HTMLTextContainer *This, HTMLElement *elem)
 {
     This->lpHTMLTextContainerVtbl = &HTMLTextContainerVtbl;
-    This->impl = impl;
+    This->element = elem;
 }

dlls/mshtml/mshtml_private.h

@@ -204,7 +204,7 @@ typedef struct {
 typedef struct {
     const IHTMLTextContainerVtbl *lpHTMLTextContainerVtbl;
 
-    IUnknown *impl;
+    HTMLElement *element;
 } HTMLTextContainer;
 
 #define HTMLDOC(x)       ((IHTMLDocument2*)               &(x)->lpHTMLDocument2Vtbl)
@@ -316,7 +316,7 @@ void HTMLTextAreaElement_Create(HTMLElement*);
 
 void HTMLElement2_Init(HTMLElement*);
 
-void HTMLTextContainer_Init(HTMLTextContainer*,IUnknown*);
+void HTMLTextContainer_Init(HTMLTextContainer*,HTMLElement*);
 
 HRESULT HTMLDOMNode_QI(HTMLDOMNode*,REFIID,void**);
 HRESULT HTMLElement_QI(HTMLElement*,REFIID,void**);