Bug 621056 - Prevent the timer to be eaten alive by the GC. r=bz a=tests

content/base/test/script-1_bug597345.sjs

@@ -1,3 +1,6 @@
+// timer has to be alive so it can't be eaten by the GC.
+var timer;
+
 function handleRequest(request, response)
 {
   response.setHeader("Cache-Control", "no-cache", false);
@@ -5,7 +8,7 @@ function handleRequest(request, response)
   // The "stray" open comment at the end of the write is important!
   response.write("document.write(\"<script charset='utf-8' src='script-2_bug597345.js'></script><!--\")");
   response.processAsync();
-  var timer = Components.classes["@mozilla.org/timer;1"]
+  timer = Components.classes["@mozilla.org/timer;1"]
     .createInstance(Components.interfaces.nsITimer);
   timer.initWithCallback(function() {
       response.finish();