msxml3/tests: Add a test to show that IXMLElementCollection enumerator doesn't…

dlls/msxml3/tests/xmldoc.c

@@ -727,6 +727,13 @@ static void test_xmlelem_collection(void)
     ok(hr == S_OK, "Expected S_OK, got %08x\n", hr);
     ok(unk != NULL, "Expected non-NULL unk\n");
 
+    enumVar = (void *)0xdeadbeef;
+    hr = IUnknown_QueryInterface(unk, &IID_IXMLElementCollection, (LPVOID *)&enumVar);
+todo_wine
+    ok(hr == E_NOINTERFACE, "Expected E_NOINTERFACE, got %08x\n", hr);
+todo_wine
+    ok(enumVar == NULL || broken(enumVar == (void *)0xdeadbeef) /* XP */, "Expected NULL, got %p\n", enumVar);
+
     hr = IUnknown_QueryInterface(unk, &IID_IEnumVARIANT, (LPVOID *)&enumVar);
     ok(hr == S_OK, "Expected S_OK, got %08x\n", hr);
     ok(enumVar != NULL, "Expected non-NULL enumVar\n");