Minor cleanup

See #300

cmd/micro/messenger.go

@@ -151,6 +151,8 @@ func (m *Messenger) LetterPrompt(prompt string, responses ...rune) (rune, bool)
 					}
 				}
 			case tcell.KeyCtrlC, tcell.KeyCtrlQ, tcell.KeyEscape:
+				m.Clear()
+				m.Reset()
 				m.hasPrompt = false
 				return ' ', true
 			}

cmd/micro/view.go

@@ -172,8 +172,6 @@ func (v *View) ScrollDown(n int) {
 func (v *View) CanClose(msg string, responses ...rune) bool {
 	if v.Buf.IsModified {
 		char, canceled := messenger.LetterPrompt("You have unsaved changes. "+msg, responses...)
-		messenger.Clear()
-		messenger.Reset()
 		if !canceled {
 			if char == 'y' {
 				return true