Bug 1301269 - Fix update retry timer is released before firing. r=francois

MozReview-Commit-ID: KF1j2EFuxpa

--HG--
extra : rebase_source : 5c0a4d18d2fd4c6e615a975573d194344bba832c

toolkit/components/url-classifier/tests/mochitest/classifierCommon.js

@@ -6,8 +6,9 @@ const { classes: Cc, interfaces: Ci, results: Cr } = Components;
 var dbService = Cc["@mozilla.org/url-classifier/dbservice;1"]
                 .getService(Ci.nsIUrlClassifierDBService);
 
+var timer;
 function setTimeout(callback, delay) {
-  let timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+  timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
   timer.initWithCallback({ notify: callback },
                            delay,
                            Ci.nsITimer.TYPE_ONE_SHOT);