fix memory leak

src/private/multisplitter/examples/quick/multisplitter.cpp

@@ -81,13 +81,17 @@ MultiSplitter::MultiSplitter()
     connect(this, &QQuickItem::heightChanged, this, &MultiSplitter::onSizeChanged);
 }
 
+MultiSplitter::~MultiSplitter()
+{
+    delete m_rootContainer;
+}
+
 void MultiSplitter::addItem(const QString &filename, Layouting::Item::Location loc)
 {
     auto item = new Item(this);
     item->setGuestWidget(new QuickItem(filename, this));
     m_rootContainer->insertItem(item, loc);
 
-
 }
 
 void MultiSplitter::onSizeChanged()

src/private/multisplitter/examples/quick/multisplitter.h

@@ -36,6 +36,7 @@ class MultiSplitter
     Q_OBJECT
 public:
     MultiSplitter();
+    ~MultiSplitter() override;
     void addItem(const QString &filename, Layouting::Item::Location);
 
 private: