fix 另存卡组

Classes/gframe/deck_con.cpp

@@ -250,6 +250,7 @@ bool DeckBuilder::OnEvent(const irr::SEvent& event) {
 					mainGame->cbDBDecks->addItem(dname);
 					mainGame->cbDBDecks->setSelected(mainGame->cbDBDecks->getItemCount() - 1);
 				}
+				prev_deck = mainGame->cbDBDecks->getSelected();
 				int catesel = mainGame->cbDBCategory->getSelected();
 				wchar_t catepath[256];
 				deckManager.GetCategoryPath(catepath, catesel, mainGame->cbDBCategory->getText(), true);