qtquick: Fix build on mac

Mostly due to -Werror and clang having more warnings

tests/utils.cpp

@@ -19,7 +19,6 @@
 #include <QCloseEvent>
 #include <QDebug>
 #include <QPainter>
-#include <QPushButton>
 #include <QtTest/QtTest>
 
 #ifdef KDDOCKWIDGETS_QTQUICK
@@ -29,6 +28,7 @@
 #else
 # include "DockWidget.h"
 # include "MainWindow.h"
+# include <QPushButton>
 #endif
 
 using namespace KDDockWidgets;
@@ -270,3 +270,11 @@ void KDDockWidgets::Tests::nestDockWidget(DockWidgetBase *dock, DropArea *dropAr
 }
 
 EmbeddedWindow::~EmbeddedWindow() = default;
+
+#ifdef KDDOCKWIDGETS_QTQUICK
+    MyWidget2::~MyWidget2() = default;
+    NonClosableWidget::~NonClosableWidget() = default;
+    QTextEdit::~QTextEdit() = default;
+    QLineEdit::~QLineEdit() = default;
+    QPushButton::~QPushButton() = default;
+#endif

tests/utils.h

@@ -169,6 +169,8 @@ public:
         : MyWidget(QString::fromLatin1(name))
     {
     }
+
+    ~QPushButton();
 };
 
 class QLineEdit : public QWidgetAdapter
@@ -179,6 +181,8 @@ public:
     {
         setFocusPolicy(Qt::StrongFocus);
     }
+
+    ~QLineEdit();
 };
 
 class QTextEdit : public QWidgetAdapter
@@ -189,6 +193,8 @@ public:
     {
         setFocusPolicy(Qt::StrongFocus);
     }
+
+    ~QTextEdit();
 };
 
 class NonClosableWidget : public QWidgetAdapter
@@ -201,6 +207,8 @@ public:
     {
     }
 
+    ~NonClosableWidget();
+
 protected:
     void onCloseEvent(QCloseEvent *ev) override
     {
@@ -218,6 +226,8 @@ public:
         setSizeHint(minSz);
     }
 
+    ~MyWidget2();
+
     QSize sizeHint() const
     {
         return m_sizeHint;