commit 2dac1a1a2ed79cbbc9c80d8a10fcdb511c013341
Author: Ryan Dahl <ry@tinyclouds.org>
Date:   Thu May 20 15:45:07 2010 -0700

    fix global var leak

diff --git a/lib/fs.js b/lib/fs.js
index fc0843b..3ea6e07 100644
--- a/lib/fs.js
+++ b/lib/fs.js
@@ -147,16 +147,14 @@ fs.read = function (fd, buffer, offset, length, position, callback) {
   if (!(buffer instanceof Buffer)) {
     // legacy string interface (fd, length, position, encoding, callback)
     var cb = arguments[4];
-    encoding = arguments[3];
+    var encoding = arguments[3];
     position = arguments[2];
     length = arguments[1];
     buffer = new Buffer(length);
     offset = 0;

     callback = function(err, bytesRead) {
-      if (!cb) {
-        return;
-      }
+      if (!cb) return;

       var str = (bytesRead > 0)
         ? buffer.toString(encoding, 0, bytesRead)