Added debug comment to let the server not connect any items

(--> client predictions wrong, useful for debugging).

src/items/item_manager.cpp

@@ -333,6 +333,13 @@ void  ItemManager::checkItemHit(AbstractKart* kart)
                                i!=m_all_items.end();  i++)
     {
         if((!*i) || !(*i)->isAvailable()) continue;
+
+        // DEBUG: This line can be used so that the server does NOT collect
+        // any items, to test that the (then) incorrect client-side prediction
+        // is fixed correctly.
+        //if ((*i)->hitKart(kart->getXYZ(), kart) && 
+        //    !NetworkConfig::get()->isServer())
+
         // To allow inlining and avoid including kart.hpp in item.hpp,
         // we pass the kart and the position separately.
         if((*i)->hitKart(kart->getXYZ(), kart))