From 48497b7b0e821f54a03a58f0861bd3a8d9ac49a0 Mon Sep 17 00:00:00 2001
From: Andrew Stewart <andrew@stwrt.ca>
Date: Thu, 4 Sep 2014 11:14:47 -0700
Subject: [PATCH] Default to no-op callbacks for #halt methods

---
 lib/cylon.js | 1 +
 lib/robot.js | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/lib/cylon.js b/lib/cylon.js
index 65e5bd2..f99e0f7 100644
--- a/lib/cylon.js
+++ b/lib/cylon.js
@@ -105,6 +105,7 @@ Cylon.config = function(key) {
 //
 // Returns nothing
 Cylon.halt = function halt(callback) {
+  callback = callback || function() {}
   // if robots can't shut down quickly enough, forcefully self-terminate
   var timeout = Config.halt_timeout || 3000
   Utils.after(timeout, callback);
diff --git a/lib/robot.js b/lib/robot.js
index 22fba1a..bcb6fa6 100644
--- a/lib/robot.js
+++ b/lib/robot.js
@@ -285,6 +285,8 @@ Robot.prototype.startDevices = function(callback) {
 //
 // Returns nothing
 Robot.prototype.halt = function(callback) {
+  callback = callback || function() {};
+
   var fns = [];
 
   for (var d in this.devices) {