Memory leak fix for lab 4 of nodeconf's dtrace + mdb workshop

gistfile1.diff

diff --git a/leak2.js b/leak2.js
index e4b6a47..7fe4c18 100644
--- a/leak2.js
+++ b/leak2.js
@@ -7,15 +7,16 @@ result   = null;
 
 console.log("STARTING");
 process.nextTick(function run() {
-  var script = vm.createScript('setInterval(function() {}, 0);', 'test.js');
+  var script = vm.createScript('var myInterval = setInterval(function() {}, 0); clearInterval(myInterval); ', 'test.js');
   var sandbox = { setInterval: setInterval };
-  script.runInNewContext(sandbox);
+  script.runInThisContext();
 
   total--;
   if (total) {
 /*    process.nextTick(run); */
-      setTimeout(function() {
+      var myTimeout = setTimeout(function() {
          run();
+         clearTimeout(myTimeout);
       }, 1000);
   } else {
     console.log("COMPLETE");