fix deck export filename

gframe/menu_handler.cpp

@@ -309,7 +309,7 @@ bool MenuHandler::OnEvent(const irr::SEvent& event) {
 					int extra = replay.ReadInt32();
 					for(int j = 0; j < extra; ++j)
 						tmp_deck.extra.push_back(dataManager.GetCodePointer(replay.ReadInt32()));
-					myswprintf(filename, L"%ls %ls", ex_filename, namebuf[i]);
+					myswprintf(filename, L"deck/%ls-%d %ls.ydk", ex_filename, i + 1, namebuf[i]);
 					deckManager.SaveDeck(tmp_deck, filename);
 				}
 				mainGame->stACMessage->setText(dataManager.GetSysString(1335));