PEP 3123: Provide forward compatibility with Python 3.0, while keeping
backwards compatibility. Add Py_Refcnt, Py_Type, Py_Size, and
PyVarObject_HEAD_INIT.
diff --git a/Objects/fileobject.c b/Objects/fileobject.c
index ac093ce..4c5b37d 100644
--- a/Objects/fileobject.c
+++ b/Objects/fileobject.c
@@ -406,7 +406,7 @@
 	Py_XDECREF(f->f_mode);
 	Py_XDECREF(f->f_encoding);
 	drop_readahead(f);
-	f->ob_type->tp_free((PyObject *)f);
+	Py_Type(f)->tp_free((PyObject *)f);
 }
 
 static PyObject *
@@ -2077,8 +2077,7 @@
 );
 
 PyTypeObject PyFile_Type = {
-	PyObject_HEAD_INIT(&PyType_Type)
-	0,
+	PyVarObject_HEAD_INIT(&PyType_Type, 0)
 	"file",
 	sizeof(PyFileObject),
 	0,