Add SF reference to news item.
diff --git a/Misc/NEWS b/Misc/NEWS
index f206985..005a768 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -18,7 +18,7 @@
codeop.py depends on this behavior, so a compilation flag had to be
invented that causes the tokenizer to revert to the old behavior;
this required extra changes to 2 .h files, 2 .c files, and 2 .py
- files.
+ files. (Fixes SF bug #501622.)
- If a new-style class defines neither __new__ nor __init__, its
constructor would ignore all arguments. This is changed now: the