From 635ea6006ad47628dd2c1e216eea640adfa1663f Mon Sep 17 00:00:00 2001
From: BufoViridis <30531954+BufoViridis@users.noreply.github.com>
Date: Tue, 30 Jan 2018 19:43:50 +0200
Subject: [PATCH] src: fix crypto.pbkdf2 callback error argument
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Callbacks should always return `null` instead of `undefined` if no
error occurred.

PR-URL: https://github.com/nodejs/node/pull/18458
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
---
 src/node_crypto.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/node_crypto.cc b/src/node_crypto.cc
index 5e331a0b7ca506..a398f745537b54 100644
--- a/src/node_crypto.cc
+++ b/src/node_crypto.cc
@@ -5599,7 +5599,7 @@ void PBKDF2Request::Work(uv_work_t* work_req) {
 
 void PBKDF2Request::After(Local<Value> (*argv)[2]) {
   if (success_) {
-    (*argv)[0] = Undefined(env()->isolate());
+    (*argv)[0] = Null(env()->isolate());
     (*argv)[1] = Buffer::New(env(), key_, keylen_).ToLocalChecked();
     key_ = nullptr;
     keylen_ = 0;