When .Ask fails, the terminal state isn’t restored

[skitt]

When survey is used with no input, it fails (EOF) and leaves the terminal as-is, with the cursor in the bottom-right-hand corner and hidden.

Reproducer:

package main

import (
	"github.com/AlecAivazis/survey/v2"
)

func main() {
	cont := false
	survey.AskOne(&survey.Confirm{
		Message: "Do you want to continue?",
	}, &cont)
}

Run as ./surveydemo < /dev/null.