From 97d14ad3f80c2f755445411edf83f3b0fc12c660 Mon Sep 17 00:00:00 2001
From: Erik Kemperman <erikkemperman@gmail.com>
Date: Thu, 13 Jul 2017 01:18:38 +0200
Subject: [PATCH] Update: Invoke callback with error or result, not both, when
 reading contents (#259)

---
 lib/src/read-contents/index.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/src/read-contents/index.js b/lib/src/read-contents/index.js
index 81f263cc..5c3117d7 100644
--- a/lib/src/read-contents/index.js
+++ b/lib/src/read-contents/index.js
@@ -39,7 +39,10 @@ function readContents(optResolver) {
     // This is invoked by the various readXxx modules when they've finished
     // reading the contents.
     function onRead(readErr) {
-      callback(readErr, file);
+      if (readErr) {
+        return callback(readErr);
+      }
+      return callback(null, file);
     }
   }