Minor refactoring
Minor refactoring

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