Finish changelog message for 9922.

changes/bug9922

@@ -1,3 +1,5 @@
   o Minor bugfixes:
-    - When clients use bridges, [...] Fixes bug 9922; bugfix on [...]
+    - Fix a bug where clients using bridges would report themselves
+      as 50% bootstrapped even without a live consensus document.
+      Fixes bug 9922; bugfix on 0.2.1.1-alpha.