Minimal change so I can add the rest of MAL's checkin message:
M.-A. Lemburg <mal@lemburg.com>:
Fixed a core dump in PyUnicode_Format().
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index dd21a5f..fa7c5ea2 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -1,7 +1,7 @@
/*
Unicode implementation based on original code by Fredrik Lundh,
-modified by Marc-Andre Lemburg (mal@lemburg.com) according to the
+modified by Marc-Andre Lemburg <mal@lemburg.com> according to the
Unicode Integration Proposal (see file Misc/unicode.txt).
(c) Copyright CNRI, All Rights Reserved. NO WARRANTY.