[Freeciv-Dev] (PR#10716) is_observer entry needed for savegame

["Mike Kaufman" <kaufman@xxxxxxxxxxxxxxxxxxxxxx>]

<URL: http://rt.freeciv.org/Ticket/Display.html?id=10716 >

jason says just don't save the observer in the savegame. good idea.

  i = 0
  players_iterate(pplayer) {
    if (!pplayer->is_observer) {
      player_save(pplayer, i++, file);
    }
  } players_iterate_end;

and

  bool has_obs = FALSE;
  players_iterate(pplayer) {
    if (pplayer->is_observer) {
       has_obs = TRUE;
    }
  } players_iterate_end;

  secfile_insert_int(file, has_obs ? game.nplayers - 1 : game.nplayers,    
                     "game.nplayers");

-mike