citra_qt: Save ban list for room hosting

src/citra_qt/multiplayer/state.cpp

@@ -13,6 +13,7 @@
 #include "citra_qt/multiplayer/lobby.h"
 #include "citra_qt/multiplayer/message.h"
 #include "citra_qt/multiplayer/state.h"
+#include "citra_qt/ui_settings.h"
 #include "citra_qt/util/clickable_label.h"
 #include "common/announce_multiplayer_room.h"
 #include "common/logging/log.h"
@@ -213,6 +214,10 @@ bool MultiplayerState::OnCloseRoom() {
         if (room->GetState() != Network::Room::State::Open) {
             return true;
         }
+        // Save ban list
+        if (auto room = Network::GetRoom().lock()) {
+            UISettings::values.ban_list = std::move(room->GetBanList());
+        }
         room->Destroy();
         announce_multiplayer_session->Stop();
         LOG_DEBUG(Frontend, "Closed the room (as a server)");