From f257546c72b6412b0ecc5fd135d5af1dca14150b Mon Sep 17 00:00:00 2001
From: JackySee <jackysee@gmail.com>
Date: Fri, 16 Jan 2015 10:04:50 +0800
Subject: [PATCH] error code maybe null

I've come across a case that on Windows machine running a watch parallel with jetty, sometimes it gives code = null, which will fail the scripts.
---
 index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 004c50d..f2a2e47 100755
--- a/index.js
+++ b/index.js
@@ -3,7 +3,7 @@
 var exec = require('child_process').exec;
 
 function potentialExit (childCmd, code) {
-    code = code.code || code;
+    code = code? (code.code || code) : code;
     if (code > 0) {
         console.error('`' + childCmd + '` failed with exit code ' + code);
         process.exit(code);