问UIImagePickerController在iOS 11上的泄漏

EN

import UIKit

class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

    @IBAction func takePhoto(_ sender: Any) {

        let picker = UIImagePickerController()
        picker.delegate = self
        picker.sourceType = .camera
        picker.allowsEditing = false

        self.present(picker, animated: true, completion: nil)
    }

    @IBAction func recordVideo(_ sender: Any) {

        let picker = UIImagePickerController()
        picker.delegate = self
        picker.sourceType = .camera
        picker.allowsEditing = false
        picker.mediaTypes = ["public.movie"]
        picker.videoQuality = .typeHigh

        self.present(picker, animated: true, completion: nil)
    }

    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String: Any]) {

        picker.dismiss(animated: true, completion: nil)

        if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {
            print(image.size)
        }

        if let video = info[UIImagePickerControllerMediaURL] as? URL {
            print(video.path)
        }
    }

    func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
        picker.dismiss(animated: true, completion: nil)
    }

}