Use 4arg connect

src/analyzer/analyzercontainer.cpp

@@ -236,6 +236,6 @@ void AnalyzerContainer::AddFramerate(const QString &name, const int framerate) {
   group_framerate_->addAction(action);
   framerate_list_ << framerate;
   action->setCheckable(true);
-  QObject::connect(action, &QAction::triggered, [this, framerate]() { ChangeFramerate(framerate); } );
+  QObject::connect(action, &QAction::triggered, this, [this, framerate]() { ChangeFramerate(framerate); } );
 
 }

src/collection/collectionfilterwidget.cpp

@@ -165,7 +165,7 @@ void CollectionFilterWidget::Init(CollectionModel *model) {
   QList<QAction*> filter_ages = filter_ages_.keys();
   for (QAction *action : filter_ages) {
     int age = filter_ages_[action];
-    QObject::connect(action, &QAction::triggered, [this, age]() { model_->SetFilterAge(age); } );
+    QObject::connect(action, &QAction::triggered, this, [this, age]() { model_->SetFilterAge(age); } );
   }
 
   // Load settings

src/playlist/playlistheader.cpp

@@ -136,7 +136,7 @@ void PlaylistHeader::AddColumnAction(int index) {
   action->setChecked(!isSectionHidden(index));
   show_actions_ << action;
 
-  QObject::connect(action, &QAction::triggered, [this, index]() { ToggleVisible(index); });
+  QObject::connect(action, &QAction::triggered, this, [this, index]() { ToggleVisible(index); });
 
 }
 

src/smartplaylists/smartplaylistwizard.cpp

@@ -139,7 +139,7 @@ void SmartPlaylistWizard::AddPlugin(SmartPlaylistWizardPlugin *plugin) {
   type_page_->layout()->addWidget(radio_button);
   type_page_->layout()->addWidget(description);
 
-  QObject::connect(radio_button, &QRadioButton::clicked, [this, index]() { TypeChanged(index); });
+  QObject::connect(radio_button, &QRadioButton::clicked, this, [this, index]() { TypeChanged(index); });
 
   if (index == 0) {
     radio_button->setChecked(true);