Minor refactoring
Minor refactoring

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