dsync: Added a comment.

diff --git a/src/dsync/dsync-worker-local.c b/src/dsync/dsync-worker-local.c
index 7778cbcea419c4f522a3cfd97f6cc72524c518ec..e9a916c962734223ada81ef197345bda35dc031b 100644 (file)
--- a/src/dsync/dsync-worker-local.c
+++ b/src/dsync/dsync-worker-local.c
@@ -1561,6 +1561,9 @@ local_worker_save_msg_continue(struct local_dsync_worker *worker)
        i_stream_unref(&worker->save_input);
 
        dsync_worker_try_finish(worker);
+       /* call the callback last, since it could call worker code again and
+          cause problems (e.g. if _try_finish() is called again, it could
+          cause a duplicate finish_callback()) */
        callback(worker->save_context);
 }