Load the sound from its resource id

Property definitions

android $ SoundPool :: load_id
	# Load the sound from its resource id
	fun load_id(context: NativeActivity, id:Int): Sound do
		var resval = nsoundpool.load_id(context, id, priority)
			if  resval == -1 then
			self.error = new Error("Unable to load sound from assets")
			return new Sound.priv_init(null, -1, self, self.error)
		else
			return new Sound.priv_init(null, resval, self, null)
		end
	end
lib/android/audio.nit:275,2--284,4