Use other method to enumerate contents, which causing crash(maybe only occurred for archved build)
Use other method to enumerate contents, which causing crash(maybe only occurred for archved build)

- Fix https://github.com/onevcat/Kingfisher/issues/619

onevcat/Kingfisher,onevcat/Kingfisher,Ashok28/Kingfisher,Ashok28/Kingfisher,Ashok28/Kingfisher,farice/VennCache,pNre/Kingfisher,pNre/Kingfisher,tomaskraina/Kingfisher,farice/VennCache,tomaskraina/Kingfisher,tomaskraina/Kingfisher,pNre/Kingfisher,farice/VennCache