Function copyAttrs

test/helpers/sinon.js:3614–3622

(args)

             });

        var copyAttrs = function(args) {
            each(args, function(attr) {
              try {
                fakeXhr[attr] = xhr[attr]
              } catch(e) {
                if(!IE6Re.test(navigator.userAgent)) throw e;
              }
            });
        };

        var stateChange = function() {
            fakeXhr.readyState = xhr.readyState;