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/Modules/_sqlite/statement.c b/Modules/_sqlite/statement.c
index 86d2178..20c1aac 100644
--- a/Modules/_sqlite/statement.c
+++ b/Modules/_sqlite/statement.c
@@ -309,7 +309,7 @@
         PyObject_ClearWeakRefs((PyObject*)self);
     }
 
-    self->ob_type->tp_free((PyObject*)self);
+    Py_Type(self)->tp_free((PyObject*)self);
 }
 
 /*
@@ -383,8 +383,7 @@
 }
 
 PyTypeObject pysqlite_StatementType = {
-        PyObject_HEAD_INIT(NULL)
-        0,                                              /* ob_size */
+        PyVarObject_HEAD_INIT(NULL, 0)
         MODULE_NAME ".Statement",                       /* tp_name */
         sizeof(pysqlite_Statement),                     /* tp_basicsize */
         0,                                              /* tp_itemsize */