From 83fd15b27c6de75e5fbd0eb871df5402ae29857d Mon Sep 17 00:00:00 2001
From: adriendulong <adrien.dulong@gmail.com>
Date: Wed, 15 Nov 2017 12:44:54 +0100
Subject: [PATCH] Fix a little error in the middleware aprt

---
 index.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/index.js b/index.js
index 405aa80..73f3c24 100644
--- a/index.js
+++ b/index.js
@@ -505,6 +505,8 @@ class Messenger extends EventEmitter {
 				return this._verifyToken(req, res);
 			if (req.method !== 'POST') return res.end();
 
+			let body = '';
+
 			req.on('data', chunk => {
 				body += chunk;
 			});