Fix the error indicated by automated tests

packages/blaze/template.js

@@ -530,13 +530,13 @@ Template.prototype.events = function (eventMap) {
     eventMap2[k] = (function (k, v) {
       return function (event /*, ...*/) {
         var view = this; // passed by EventAugmenter
+        var args = Array.prototype.slice.call(arguments);
         // Exiting the current computation to avoid creating unnecessary
         // and unexpected reactive dependencies with Templates data
         // or any other reactive dependencies defined in event handlers
         return Tracker.nonreactive(function () {
           var data = Blaze.getData(event.currentTarget);
           if (data == null) data = {};
-          var args = Array.prototype.slice.call(arguments);
           var tmplInstanceFunc = Blaze._bind(view.templateInstance, view);
           args.splice(1, 0, tmplInstanceFunc());
           return Template._withTemplateInstanceFunc(tmplInstanceFunc, function () {