Patch #1680015: Don't modify __slots__ tuple if it contains an unicode
name. Remove a reference leak that happened if the name could not be
converted to string. Will backport.
diff --git a/Misc/NEWS b/Misc/NEWS
index be9e972..56b9007 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,9 @@
 Core and builtins
 -----------------
 
+- Patch #1680015: Don't modify __slots__ tuple if it contains an unicode
+  name.
+
 - Patch #1444529: the builtin compile() now accepts keyword arguments.
 
 - Bug #1678647: write a newline after printing an exception in any