Interpolate "- Press ENTER to Teleport -" prompt

This is only really noticeable in slowmode, but if you're playing in
slowmode it'll be pretty smooth.

desktop_version/src/Logic.cpp

@@ -1490,6 +1490,7 @@ void gamelogic()
 
     game.activeactivity = obj.checkactivity();
 
+    game.oldreadytotele = game.readytotele;
     if (game.activetele)
     {
         int i = obj.getplayer();