Don't use instance for accessing static functions

src/app/application.cpp

@@ -225,7 +225,7 @@ namespace
 Application::Application(int &argc, char **argv)
     : BaseApplication(argc, argv)
     , m_shutdownAct(ShutdownDialogAction::Exit)
-    , m_commandLineArgs(parseCommandLine(this->arguments()))
+    , m_commandLineArgs(parseCommandLine(Application::arguments()))
     , m_storeFileLoggerEnabled(FILELOGGER_SETTINGS_KEY(u"Enabled"_qs))
     , m_storeFileLoggerBackup(FILELOGGER_SETTINGS_KEY(u"Backup"_qs))
     , m_storeFileLoggerDeleteOld(FILELOGGER_SETTINGS_KEY(u"DeleteOld"_qs))

src/base/search/searchdownloadhandler.cpp

@@ -46,7 +46,7 @@ SearchDownloadHandler::SearchDownloadHandler(const QString &siteUrl, const QStri
             , this, &SearchDownloadHandler::downloadProcessFinished);
     const QStringList params
     {
-        (m_manager->engineLocation() / Path(u"nova2dl.py"_qs)).toString(),
+        (SearchPluginManager::engineLocation() / Path(u"nova2dl.py"_qs)).toString(),
         siteUrl,
         url
     };

src/base/search/searchhandler.cpp

@@ -73,7 +73,7 @@ SearchHandler::SearchHandler(const QString &pattern, const QString &category, co
 
     const QStringList params
     {
-        (m_manager->engineLocation() / Path(u"nova2.py"_qs)).toString(),
+        (SearchPluginManager::engineLocation() / Path(u"nova2.py"_qs)).toString(),
         m_usedPlugins.join(u','),
         m_category
     };

src/gui/transferlistfilters/categoryfiltermodel.cpp

@@ -305,7 +305,7 @@ void CategoryFilterModel::categoryAdded(const QString &categoryName)
 
     if (m_isSubcategoriesEnabled)
     {
-        QStringList expanded = BitTorrent::Session::instance()->expandCategory(categoryName);
+        QStringList expanded = BitTorrent::Session::expandCategory(categoryName);
         if (expanded.count() > 1)
             parent = findItem(expanded[expanded.count() - 2]);
     }
@@ -410,7 +410,7 @@ void CategoryFilterModel::populate()
         for (const QString &categoryName : asConst(session->categories()))
         {
             CategoryModelItem *parent = m_rootItem;
-            for (const QString &subcat : asConst(session->expandCategory(categoryName)))
+            for (const QString &subcat : asConst(BitTorrent::Session::expandCategory(categoryName)))
             {
                 const QString subcatName = shortName(subcat);
                 if (!parent->hasChild(subcatName))
@@ -443,7 +443,7 @@ CategoryModelItem *CategoryFilterModel::findItem(const QString &fullName) const
         return m_rootItem->child(fullName);
 
     CategoryModelItem *item = m_rootItem;
-    for (const QString &subcat : asConst(BitTorrent::Session::instance()->expandCategory(fullName)))
+    for (const QString &subcat : asConst(BitTorrent::Session::expandCategory(fullName)))
     {
         const QString subcatName = shortName(subcat);
         if (!item->hasChild(subcatName)) return nullptr;