Add a reminder for the maintainer of whatsnew.
diff --git a/Doc/whatsnew/2.6.rst b/Doc/whatsnew/2.6.rst
index efc18e8..a1566a5 100644
--- a/Doc/whatsnew/2.6.rst
+++ b/Doc/whatsnew/2.6.rst
@@ -1672,6 +1672,10 @@
(Contributed by Raymond Hettinger.)
+* XXX Describe the new ctypes calling convention that allows safe
+ access to errno.
+ (Implemented by Thomas Heller; :issue:`1798`.)
+
* The :mod:`ctypes` module now supports a :class:`c_bool` datatype
that represents the C99 ``bool`` type. (Contributed by David Remahl;
:issue:`1649190`.)