Fix exception when pressing "undo" playing in gamebook mode if there are no options
Fix exception when pressing "undo" playing in gamebook mode if there are no options

F2Andy/quest,textadventures/quest,textadventures/quest,siege918/quest,siege918/quest,textadventures/quest,F2Andy/quest,siege918/quest,F2Andy/quest,siege918/quest,textadventures/quest