Bug 1396740 - declare waitForEvents object in TPS's mozmill extension. r=tcsc

MozReview-Commit-ID: AFWuHR7JgCp

--HG--
extra : rebase_source : dd886f33d5e427e046c2004bd5e993748bfc3caa

services/sync/tps/extensions/mozmill/resource/driver/controller.js

@@ -28,7 +28,7 @@ var sleep = utils.sleep;
 // For Mozmill 1.5 backward compatibility
 var windowMap = windows.map;
 
-waitForEvents = function () {
+var waitForEvents = function () {
 }
 
 waitForEvents.prototype = {