[libsigc++2] Correct a bug number in ChangeLog.

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 73abe4eb3f62376f7aacf2e8618b400f5ba019ee
Author: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date:   Mon Sep 10 10:23:12 2012 +0200

    Correct a bug number in ChangeLog.

 ChangeLog |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index f5cb26e..931ab14 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -59,7 +59,7 @@
 	* sigc++/adaptors/macros/adaptor_trait.h.m4: Mention that a user-supplied
 	adaptor must be accompanied by a specialization of template function
 	visit_each(). Correct some minor errors in the example of a user-supplied
-	adaptor. Bug #48637.
+	adaptor. Bug #486373.
 
 2011-07-19  Kjell Ahlstedt  <kjell ahlstedt bredband net>