Defined macros Py_RETURN_(TRUE|FALSE|NONE) as helper functions for returning
the specified value. All three Py_INCREF the singleton and then return it.
diff --git a/Include/object.h b/Include/object.h
index 252e99c..8fdd4dc 100644
--- a/Include/object.h
+++ b/Include/object.h
@@ -633,6 +633,9 @@
PyAPI_DATA(PyObject) _Py_NoneStruct; /* Don't use this directly */
#define Py_None (&_Py_NoneStruct)
+/* Macro for returning Py_None from a function */
+#define Py_RETURN_NONE Py_INCREF(Py_None); return Py_None;
+
/*
Py_NotImplemented is a singleton used to signal that an operation is
not implemented for a given type combination.