Set properties on XHR object after calling open() method

 common.js

@@ -59,6 +59,7 @@
        var self = this;
        var request = new XMLHttpRequest();
        var promise = new Promise(function(resolve, reject) {
            request.open('GET', url, true);
            request.timeout = self.timeout;
            request.onreadystatechange = function() {
                if(this.readyState == 4) {
@@ -73,7 +74,6 @@
                    }
                }
            };
            request.open('GET', url, true);
            request.send();
        });
        return new Deferred(promise, request);