mshtml: Use query_interface in the dispex vtbl for HTMLNamespaceCollection.

dlls/mshtml/omnavigator.c

@@ -2424,22 +2424,12 @@ static HRESULT WINAPI HTMLNamespaceCollection_QueryInterface(IHTMLNamespaceColle
 {
     HTMLNamespaceCollection *This = impl_from_IHTMLNamespaceCollection(iface);
 
-    TRACE("(%p)->(%s %p)\n", This, debugstr_mshtml_guid(riid), ppv);
-
-    if(IsEqualGUID(&IID_IUnknown, riid)) {
-        *ppv = &This->IHTMLNamespaceCollection_iface;
-    }else if(IsEqualGUID(&IID_IHTMLNamespaceCollection, riid)) {
-        *ppv = &This->IHTMLNamespaceCollection_iface;
-    }else if(dispex_query_interface(&This->dispex, riid, ppv)) {
+    if(dispex_query_interface(&This->dispex, riid, ppv))
         return *ppv ? S_OK : E_NOINTERFACE;
-    }else {
-        WARN("Unsupported interface %s\n", debugstr_mshtml_guid(riid));
-        *ppv = NULL;
-        return E_NOINTERFACE;
-    }
 
-    IUnknown_AddRef((IUnknown*)*ppv);
-    return S_OK;
+    *ppv = NULL;
+    WARN("(%p)->(%s %p)\n", This, debugstr_mshtml_guid(riid), ppv);
+    return E_NOINTERFACE;
 }
 
 static ULONG WINAPI HTMLNamespaceCollection_AddRef(IHTMLNamespaceCollection *iface)
@@ -2538,6 +2528,16 @@ static inline HTMLNamespaceCollection *HTMLNamespaceCollection_from_DispatchEx(D
     return CONTAINING_RECORD(iface, HTMLNamespaceCollection, dispex);
 }
 
+static void *HTMLNamespaceCollection_query_interface(DispatchEx *dispex, REFIID riid)
+{
+    HTMLNamespaceCollection *This = HTMLNamespaceCollection_from_DispatchEx(dispex);
+
+    if(IsEqualGUID(&IID_IHTMLNamespaceCollection, riid))
+        return &This->IHTMLNamespaceCollection_iface;
+
+    return NULL;
+}
+
 static void HTMLNamespaceCollection_destructor(DispatchEx *dispex)
 {
     HTMLNamespaceCollection *This = HTMLNamespaceCollection_from_DispatchEx(dispex);
@@ -2545,6 +2545,7 @@ static void HTMLNamespaceCollection_destructor(DispatchEx *dispex)
 }
 
 static const dispex_static_data_vtbl_t HTMLNamespaceCollection_dispex_vtbl = {
+    .query_interface  = HTMLNamespaceCollection_query_interface,
     .destructor       = HTMLNamespaceCollection_destructor,
 };