Minor refactoring
Minor refactoring

jonesgithub/DZNPhotoPickerController,dzenbot/DZNPhotoPickerController,ndnguru/DZNPhotoPickerController,lichuanjun/DZNPhotoPickerController,topfreegames/TFGPhotoPickerController,ahbou/DZNPhotoPickerController,dennislysenko/DZNPhotoPickerController,dredenba/DZNPhotoPickerController,taojack/DZNPhotoPickerController,taojack/DZNPhotoPickerController,imjerrybao/DZNPhotoPickerController,imjerrybao/DZNPhotoPickerController,jonesgithub/DZNPhotoPickerController,taojack/DZNPhotoPickerController,jonesgithub/DZNPhotoPickerController,taojack/DZNPhotoPickerController,imjerrybao/DZNPhotoPickerController,jonesgithub/DZNPhotoPickerController,imjerrybao/DZNPhotoPickerController