Fix bug with permanent callbacks that delete themselves when run. Patch from Evan Jones.
diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index 7fe99ec..7c1ac80 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -83,5 +83,6 @@
* Optimize Java serialization of strings so that UTF-8 encoding happens only
once per string per serialization call.
* Clean up some Java warnings.
+ * Fix bug with permanent callbacks that delete themselves when run.
Michael Kucharski <m.kucharski@gmail.com>
* Added CodedInputStream.getTotalBytesRead().