Correctly delete the moved search tab

PR qbittorrent#21687.
Closes qbittorrent#21675.

src/gui/search/searchwidget.cpp

@@ -1,7 +1,7 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2015-2024  Vladimir Golovnev <[email protected]>
  * Copyright (C) 2020, Will Da Silva <[email protected]>
- * Copyright (C) 2015, 2018  Vladimir Golovnev <[email protected]>
  * Copyright (C) 2006  Christophe Dumez <[email protected]>
  *
  * This program is free software; you can redistribute it and/or
@@ -120,6 +120,7 @@ SearchWidget::SearchWidget(IGUIApplication *app, MainWindow *mainWindow)
 #endif
     connect(m_ui->tabWidget, &QTabWidget::tabCloseRequested, this, &SearchWidget::closeTab);
     connect(m_ui->tabWidget, &QTabWidget::currentChanged, this, &SearchWidget::tabChanged);
+    connect(m_ui->tabWidget->tabBar(), &QTabBar::tabMoved, this, &SearchWidget::tabMoved);
 
     const auto *searchManager = SearchPluginManager::instance();
     const auto onPluginChanged = [this]()
@@ -262,6 +263,11 @@ void SearchWidget::tabChanged(const int index)
     m_currentSearchTab = ((index < 0) ? nullptr : m_allTabs.at(m_ui->tabWidget->currentIndex()));
 }
 
+void SearchWidget::tabMoved(const int from, const int to)
+{
+    m_allTabs.move(from, to);
+}
+
 void SearchWidget::selectMultipleBox([[maybe_unused]] const int index)
 {
     if (selectedPlugin() == u"multi")

src/gui/search/searchwidget.h

@@ -1,7 +1,7 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2015-2024  Vladimir Golovnev <[email protected]>
  * Copyright (C) 2020, Will Da Silva <[email protected]>
- * Copyright (C) 2015, 2018  Vladimir Golovnev <[email protected]>
  * Copyright (C) 2006  Christophe Dumez <[email protected]>
  *
  * This program is free software; you can redistribute it and/or
@@ -66,6 +66,7 @@ private slots:
 private:
     bool eventFilter(QObject *object, QEvent *event) override;
     void tabChanged(int index);
+    void tabMoved(int from, int to);
     void closeTab(int index);
     void closeAllTabs();
     void tabStatusChanged(QWidget *tab);