lib: use const to define constants

This commit replaces a number of var statements throughout
the lib code with const statements.

PR-URL: https://github.com/iojs/io.js/pull/541
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/os.js b/lib/os.js
index 965a9b53d2..75a863e2f7 100644
--- a/lib/os.js
+++ b/lib/os.js
@@ -1,8 +1,8 @@
 'use strict';
 
-var binding = process.binding('os');
-var util = require('util');
-var isWindows = process.platform === 'win32';
+const binding = process.binding('os');
+const util = require('util');
+const isWindows = process.platform === 'win32';
 
 exports.hostname = binding.getHostname;
 exports.loadavg = binding.getLoadAvg;