2.4.4熱更新問題

Creator 2.x
#1

版本Cocos creator 2.4.4！
if (needRestart) {

        this._am.setEventCallback(null);

        this._updateListener = null;

        // Prepend the manifest's search path

        var searchPaths = (<any>jsb).fileUtils.getSearchPaths();

        var newPaths = this._am.getLocalManifest().getSearchPaths();

        console.log('newPaths: ' + JSON.stringify(newPaths));

        Array.prototype.unshift(searchPaths, newPaths);

        // This value will be retrieved and appended to the default search path during game startup,

        // please refer to samples/js-tests/main.js for detailed usage.

        // !!! Re-add the search paths in main.js is very important, otherwise, new scripts won't take effect.

        cc.sys.localStorage.setItem('HotUpdateSearchPaths', JSON.stringify(searchPaths));

        jsb.fileUtils.setSearchPaths(searchPaths);

        cc.game.restart();

    }

這一段代碼中，爲啥會給searchPaths尾部添加一個斜杆，導致游戲崩潰？？？？