add a missing "not" in bug2331 changelog

diff --git a/changes/bug2331 b/changes/bug2331
index df97ac2b4549a6dd14bc392e128dc7d52aba47d1..9940b591cb0559cada3baeef290eaa0ddc268127 100644 (file)
--- a/changes/bug2331
+++ b/changes/bug2331
@@ -1,6 +1,7 @@
   o Minor bugfixes:
     - Add assertions to check for overflow in arguments to
       base32_encode and base32_decode; fix a signed-unsigned
-      comparison there too.  These bugs are actually reachable in Tor,
-      but it's good to prevent future errors too.  Found by doorss.
+      comparison there too.  These bugs are not actually reachable in
+      Tor, but it's good to prevent future errors too.  Found by
+      doorss.