Fixed selectedService property's default value to 500px.
Fixed selectedService property's default value to 500px.

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