麻烦升级一下mmState，请求异常情况添加xhr到回调函数中

[fengxinming]

xhr.onreadystatechange = function() {
                if (xhr.readyState === 4) {
                    var status = xhr.status;
                    if (status > 399 && status < 600) {
                        reason.message = "templateUrl对应资源不存在或没有开启 CORS"
                        reason.xhr = xhr
                        reject(reason)
                    } else {
                        resolve(avalon.templateCache[url] = xhr.responseText)
                    }
                }
            }

[gogoyqj]

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