C++ compile cleanup: proper declaration of _Py_BuildValue_SizeT
diff --git a/Include/modsupport.h b/Include/modsupport.h
index 1141d6a..23d5d3a 100644
--- a/Include/modsupport.h
+++ b/Include/modsupport.h
@@ -29,6 +29,7 @@
const char *, char **, ...);
PyAPI_FUNC(int) PyArg_UnpackTuple(PyObject *, const char *, Py_ssize_t, Py_ssize_t, ...);
PyAPI_FUNC(PyObject *) Py_BuildValue(const char *, ...);
+PyAPI_FUNC(PyObject *) _Py_BuildValue_SizeT(const char *, ...);
PyAPI_FUNC(int) _PyArg_NoKeywords(const char *funcname, PyObject *kw);
PyAPI_FUNC(int) PyArg_VaParse(PyObject *, const char *, va_list);