Reverted the destination tile changes in dcslave and mckarl

(it was from UP because map_next_tile in denbus2.map was blocked, RP
version of the map doesn't have this issue.)

Fixed Karl not disappearing after walking out of view (due to mismatch
of destination tile, he would disappear only on re-entering denbus2.)

scripts_src/den/dcslave.ssl

@@ -102,8 +102,8 @@ procedure timed_event_p_proc begin
                   self_walk_to_tile(global_temp);
                end
             end else begin
-               if (tile_distance(self_tile,30302) > 3)  then begin //edit by killap - was map_next_tile
-                  anim_run_to_point_rate(30302, 5)
+               if (tile_distance(self_tile, map_next_tile) > 3)  then begin
+                  anim_run_to_point_rate(map_next_tile, 5)
                end else begin
                   destroy_object(self_obj);
                end

scripts_src/modoc/mckarl.ssl

@@ -166,7 +166,7 @@ end
 
 procedure critter_p_proc begin
    if (self_visible) then begin
-      if (self_tile == 30302) then begin //edit by killap - was map_exit_tile
+      if (self_tile == map_next_tile) then begin
          destroy_object(self_obj);
       end else if (karl_nuts) then begin
          anim_run_to_point_rate(map_next_tile, 4)