ckstyle check对通配选择符报错

[jacktan1991]

如下一个test.css包含通配选择*

* {padding-bottom: 2px;}

对test.css执行ckstyle check test.css命令时，出现如下报错信息

C:\Users\Administrator\AppData\Roaming\npm\node_modules\ckstyle\ckstyle\plugins\helper.js:214
    for(var i = 0; i < words.length; i++) {
                            ^

TypeError: Cannot read property 'length' of null
    at Object.existsAppearanceWords (C:\Users\Administrator\AppData\Roaming\npm\node_modules\ckstyle\ckstyle\plugins\helper.js:214:29)
    at check (C:\Users\Administrator\AppData\Roaming\npm\node_modules\ckstyle\ckstyle\plugins\FED2NoAppearanceNameInSelector.js:25:27)
    at null.check (C:\Users\Administrator\AppData\Roaming\npm\node_modules\ckstyle\ckstyle\base.js:35:25)
    at C:\Users\Administrator\AppData\Roaming\npm\node_modules\ckstyle\ckstyle\ckstyler.js:411:38
    at Array.forEach (native)
    at checkRuleSet (C:\Users\Administrator\AppData\Roaming\npm\node_modules\ckstyle\ckstyle\ckstyler.js:407:34)
    at C:\Users\Administrator\AppData\Roaming\npm\node_modules\ckstyle\ckstyle\ckstyler.js:490:13
    at C:\Users\Administrator\AppData\Roaming\npm\node_modules\ckstyle\ckstyle\entity\stylesheet.js:46:18
    at Array.forEach (native)
    at StyleSheet.eachRuleSet (C:\Users\Administrator\AppData\Roaming\npm\node_modules\ckstyle\ckstyle\entity\stylesheet.js:45:20)