When removing HTML comments from richtext box, if input is null then return null
When removing HTML comments from richtext box, if input is null then return null

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