tidy/modernize-use-default-member-init + manual corrections

GUI/View/Instrument/InstrumentLibraryEditor.cpp

@@ -300,7 +300,6 @@ void InstrumentLibraryEditor::onInstrumentChangedByEditor()
 
 InstrumentLibraryEditor::TreeModel::TreeModel(QObject* parent, InstrumentModel* model)
     : InstrumentsTreeModel(parent, model)
-    , m_newInstrument(nullptr)
 {
 }
 

GUI/View/Item/ItemViewOverlayButtons.cpp

@@ -39,7 +39,7 @@ protected:
     void mouseDoubleClickEvent(QMouseEvent* event) override;
 
 private:
-    bool m_hover;
+    bool m_hover{false};
     QAbstractItemView* m_view;
     QModelIndex m_index;
     Qt::Alignment m_horizontalAlignment;
@@ -61,7 +61,6 @@ public:
 
 ItemViewOverlayWidget::ItemViewOverlayWidget(QAbstractItemView* view, const QModelIndex& index)
     : QWidget(view)
-    , m_hover(false)
     , m_view(view)
     , m_index(index)
     , m_horizontalAlignment(Qt::AlignRight)

GUI/View/Sample/SampleEditor.cpp

@@ -28,7 +28,6 @@
 SampleEditor::SampleEditor(QWidget* parent, ProjectDocument* document)
     : QScrollArea(parent)
     , m_currentSampleWidget(nullptr)
-    , m_currentSample(nullptr)
     , m_document(document)
 {
     QScrollArea::setWidgetResizable(true);

GUI/View/Setup/MaskEditorToolpanel.cpp

@@ -30,7 +30,6 @@ MaskEditorToolpanel::MaskEditorToolpanel()
     : m_listView(new QListView)
     , m_maskContainerModel(nullptr)
     , m_currentMaskItem(nullptr)
-    , m_inhibitSelectionChange(false)
 {
     setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Expanding);
     setObjectName(QLatin1String("MaskEditorToolPanel"));