From f619a066c6c4b2d82477a8867a7a2d4ac1004aba Mon Sep 17 00:00:00 2001
From: Kagami Hiiragi <kagami@genshiken.org>
Date: Wed, 11 Feb 2015 18:14:22 +0300
Subject: [PATCH] Fix error.decode API

---
 lib/messages.js | 9 ++++++---
 tests/unit.js   | 2 +-
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/lib/messages.js b/lib/messages.js
index dc8243e..27e9125 100644
--- a/lib/messages.js
+++ b/lib/messages.js
@@ -386,9 +386,12 @@ var error = exports.error = {
     var vectorLength = decodedVectorLength.value;
     var rest = decodedVectorLength.rest;
     assert(rest.length >= vectorLength, "Buffer is too small");
-    var vector = new Buffer(vectorLength);
-    rest.copy(vector);
-    rest = rest.slice(vectorLength);
+    var vector = null;
+    if (vectorLength) {
+      vector = new Buffer(vectorLength);
+      rest.copy(vector);
+      rest = rest.slice(vectorLength);
+    }
 
     var decodedErrorText = structs.var_str.decode(rest);
     var length = (
diff --git a/tests/unit.js b/tests/unit.js
index 8f1b004..21d0574 100644
--- a/tests/unit.js
+++ b/tests/unit.js
@@ -576,7 +576,7 @@ describe("Message types", function() {
       var res = error.decode(encoded);
       expect(res.fatal).to.equal(0);
       expect(res.banTime).to.equal(0);
-      expect(res.vector).to.have.length(0);
+      expect(res.vector).to.not.exist;
       expect(res.errorText).to.equal("test");
       expect(res.length).to.equal(8);