fix challenge overlay creation on non-BB versions

src/ReceiveCommands.cc

@@ -2617,14 +2617,11 @@ static void on_AC_V3_BB(shared_ptr<Client> c, uint16_t, uint32_t, string& data)
       return;
     }
 
-    if (send_quest_barrier_if_all_clients_ready(l) &&
+    if (send_quest_barrier_if_all_clients_ready(l) && l->quest) {
-        (l->base_version == GameVersion::BB) &&
-        l->map &&
-        l->quest) {
       auto s = l->require_server_state();
-
       auto vq = l->quest->version(QuestScriptVersion::BB_V4, c->language());
 
+      if ((l->base_version == GameVersion::BB) && l->map) {
         auto dat_contents = prs_decompress(*vq->dat_contents);
         l->map->clear();
         l->map->add_enemies_and_objects_from_quest_data(
@@ -2647,13 +2644,16 @@ static void on_AC_V3_BB(shared_ptr<Client> c, uint16_t, uint32_t, string& data)
           string e_str = l->map->enemies[z].str();
           l->log.info("(E-%zX) %s", z, e_str.c_str());
         }
+      }
 
       for (auto& lc : l->clients) {
         if (!lc) {
           continue;
         }
 
-        send_rare_enemy_index_list(c, l->map->rare_enemy_indexes);
+        if ((l->base_version == GameVersion::BB) && l->map) {
+          send_rare_enemy_index_list(lc, l->map->rare_enemy_indexes);
+        }
 
         // On non-BB versions, overlays are created when the quest starts because
         // the server is not informed when the clients have replaced their player