Issue #15881: Added NEWS entry and proper credit.
diff --git a/Misc/NEWS b/Misc/NEWS
index de76a78..8672b0a 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -120,6 +120,9 @@
 Library
 -------
 
+- Issue #15881: Fixed atexit hook in multiprocessing.  Original patch
+  by Chris McDonough.
+
 - Issue #15340: Fix importing the random module when /dev/urandom cannot
   be opened.  This was a regression caused by the hash randomization patch.