From e00c2f2e39822cb73105943d001761af37ddbe53 Mon Sep 17 00:00:00 2001
From: David Wilson <dw@botanicus.net>
Date: Mon, 18 Sep 2017 15:36:30 +0530
Subject: [PATCH] core: allow sending 0-byte messages.

---
 mitogen/core.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mitogen/core.py b/mitogen/core.py
index a9fecf26..02d23c55 100644
--- a/mitogen/core.py
+++ b/mitogen/core.py
@@ -153,7 +153,7 @@ class Message(object):
     src_id = None
     handle = None
     reply_to = None
-    data = None
+    data = ''
 
     router = None