oops; wrong bug number.

changes/bug3404 → changes/bug3403

@@ -1,3 +1,3 @@
   o Minor bugfixes:
     - Fix a class of double-mark-for-close bugs when bufferevents
-      are enabled. Fixes bug 3404; bugfix on 0.2.3.1-alpha.
+      are enabled. Fixes bug 3403; bugfix on 0.2.3.1-alpha.