From 2aa6a6d998ed2f13e7a1bc79421f9d4356f5190e Mon Sep 17 00:00:00 2001
From: Zheng Chaoping <zbinlin@gmail.com>
Date: Wed, 11 Nov 2015 00:57:11 +0800
Subject: [PATCH] fs: return null error on readFile() success

This commit ensures that readFile() callsback with a null
error consistently on success.

PR-URL: https://github.com/nodejs/node/pull/3740
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
---
 lib/fs.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/fs.js b/lib/fs.js
index 22e00c7030..8a0de7ccf1 100644
--- a/lib/fs.js
+++ b/lib/fs.js
@@ -405,7 +405,7 @@ function readFileAfterClose(err) {
 }
 
 function tryToString(buf, encoding, callback) {
-  var e;
+  var e = null;
   try {
     buf = buf.toString(encoding);
   } catch (err) {