directory: fix missing directory icon for ..
directory: fix missing directory icon for ..

closes #996

wghust/connect,khirayama/connect,dkfiresky/connect,RickyDan/connect,tanveer12332/connect,austincitylimits/connect,llwanghong/connect,keenwon/connect,senchalabs/connect,RoseTHERESA/connect,lian774739140/connect,mi2oon/connect,chinazhaghai/connect,liuwei9413/connect,mi2oon/connect,qitianchan/connect,khalerc/connect,gtomitsuka/connect,behind2/connect