Check if object is gone before calling on_rightclick

fix #16601

src/network/serverpackethandler.cpp

@@ -1198,6 +1198,10 @@ void Server::handleCommand_Interact(NetworkPacket *pkt)
 					SendInventory(player, true);
 			}
 
+			// on_secondary_use might have removed the object
+			if (pointed_object->isGone())
+				return;
+
 			pointed_object->rightClick(playersao);
 		} else if (m_script->item_OnPlace(selected_item, playersao, pointed)) {
 			// Placement was handled in lua