Silence some clazy warnings

src/DockWidget.h

@@ -91,7 +91,7 @@ public Q_SLOTS:
 #else
 private Q_SLOTS:
 #endif
-    FloatingWindow *morphIntoFloatingWindow();
+    KDDockWidgets::FloatingWindow *morphIntoFloatingWindow();
 
 #if defined(DOCKS_DEVELOPER_MODE)
 public:

src/LayoutSaver.cpp

@@ -30,6 +30,7 @@ static QString name(QWidget *w)
 
     qWarning() << w;
     qFatal("Invalid Widget");
+    return QString();
 }
 
 struct WindowState {

src/indicators/AnimatedIndicators_p.h

@@ -35,7 +35,7 @@ class AnimatedIndicators;
 class AnimatedRubberBand : public QRubberBand
 {
     Q_OBJECT
-    Q_PROPERTY(QVariant length READ length WRITE setLength)
+    Q_PROPERTY(QVariant length READ length WRITE setLength) // clazy:exclude=qproperty-without-notify
 public:
     typedef QList<AnimatedRubberBand *> List;
     explicit AnimatedRubberBand(DropIndicatorOverlayInterface::DropLocation, AnimatedIndicators *parent = nullptr);

src/multisplitter/MultiSplitter_p.h

@@ -197,8 +197,8 @@ public:
 Q_SIGNALS:
     void widgetCountChanged(int count);
     void visibleWidgetCountChanged(int count);
-    void widgetAdded(Item*);
-    void aboutToDumpDebug() const;
+    void widgetAdded(KDDockWidgets::Item*);
+    void aboutToDumpDebug() const; // clazy:exclude=const-signal-or-slot
 
 protected:
     void resizeEvent(QResizeEvent *) override;