#11700: proxy object close methods can now be called multiple times
This makes them work like the close provided by regular file objects.
diff --git a/Misc/NEWS b/Misc/NEWS
index ec8b72e..170d522 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -25,6 +25,9 @@
Library
-------
+- Issue #11700: mailbox proxy object close methods can now be called multiple
+ times without error.
+
- Issue #11767: Correct file descriptor leak in mailbox's __getitem__ method.
- Issue #12133: AbstractHTTPHandler.do_open() of urllib.request closes the HTTP