Clear screen after setting ddns

src/freedombone-ddns

                     fi
                     ;;
                 1) rm -f "$data"
+                   clear
                    exit 1;;
                 255) rm -f "$data"
+                     clear
                      exit 1;;
             esac
             rm -f "$data"
                     fi
                     ;;
                 1) rm -f "$data"
+                   clear
                    exit 1;;
                 255) rm -f "$data"
+                     clear
                      exit 1;;
             esac
             rm -f "$data"
         case $sel in
             0) dynamic_dns_setup
                ;;
-            255) exit 1;;
+            255) clear
+                 exit 1
+                 ;;
         esac
     fi
 }