lib/nat: Don't hang on draining timer chan (fixes #6908) (#6912)
lib/nat: Don't hang on draining timer chan (fixes #6908) (#6912)


imsodin/syncthing,wweich/syncthing,syncthing/syncthing,syncthing/syncthing,imsodin/syncthing,syncthing/syncthing,imsodin/syncthing,syncthing/syncthing,wweich/syncthing,imsodin/syncthing,wweich/syncthing,syncthing/syncthing,wweich/syncthing,syncthing/syncthing,imsodin/syncthing