Resolves: tdf#95021 crash on closing macro dialog editor

VclPtr related, dialog dtor is never called, so timer
is never stopped and timer refers to deleted parent
data

Change-Id: I804ba082817802c0017e61c6b86c5d3694995ea8

basctl/source/basicide/baside3.cxx

@@ -97,6 +97,12 @@ DialogWindow::DialogWindow(DialogWindowLayout* pParent, ScriptDocument const& rD
         SetReadOnly(true);
 }
 
+void DialogWindow::dispose()
+{
+    pEditor.reset();
+    BaseWindow::dispose();
+}
+
 void DialogWindow::LoseFocus()
 {
     if ( IsModified() )

basctl/source/inc/baside3.hxx

@@ -57,13 +57,14 @@ class DialogWindow: public BaseWindow
 {
 private:
     DialogWindowLayout& rLayout;
-    std::unique_ptr<DlgEditor> pEditor; // never nullptr
+    std::unique_ptr<DlgEditor> pEditor;
     std::unique_ptr<SfxUndoManager> pUndoMgr; // never nullptr
     OUString            aCurPath;
 
 protected:
     virtual void        Paint(vcl::RenderContext& rRenderContext, const Rectangle& rRect) override;
     virtual void        Resize() override;
+    virtual void        dispose() override;
 
     virtual void        MouseButtonDown( const MouseEvent& rMEvt ) override;
     virtual void        MouseButtonUp( const MouseEvent& rMEvt ) override;