xmllite/tests: Use an iface instead of a vtbl pointer in testinput.

[Michael Stefaniuc]

---
 dlls/xmllite/tests/reader.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/dlls/xmllite/tests/reader.c b/dlls/xmllite/tests/reader.c
index 316f8f7..e31895a 100644
--- a/dlls/xmllite/tests/reader.c
+++ b/dlls/xmllite/tests/reader.c
@@ -19,6 +19,7 @@
  */
 
 #define COBJMACROS
+#define CONST_VTABLE
 
 #include <stdarg.h>
 #include <stdio.h>
@@ -258,13 +259,13 @@ static void test_read_state_(IXmlReader *reader, XmlReadState expected,
 
 typedef struct _testinput
 {
-    const IUnknownVtbl *lpVtbl;
+    IUnknown IUnknown_iface;
     LONG ref;
 } testinput;
 
 static inline testinput *impl_from_IUnknown(IUnknown *iface)
 {
-    return (testinput *)((char*)iface - FIELD_OFFSET(testinput, lpVtbl));
+    return CONTAINING_RECORD(iface, testinput, IUnknown_iface);
 }
 
 static HRESULT WINAPI testinput_QueryInterface(IUnknown *iface, REFIID riid, void** ppvObj)
@@ -317,10 +318,10 @@ static HRESULT testinput_createinstance(void **ppObj)
     input = HeapAlloc(GetProcessHeap(), 0, sizeof (*input));
     if(!input) return E_OUTOFMEMORY;
 
-    input->lpVtbl = &testinput_vtbl;
+    input->IUnknown_iface.lpVtbl = &testinput_vtbl;
     input->ref = 1;
 
-    *ppObj = &input->lpVtbl;
+    *ppObj = &input->IUnknown_iface;
 
     return S_OK;
 }
-- 
1.7.3.4