Clear columns on destruction

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@53778 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mac/carbon/dataview.h

@@ -476,6 +476,8 @@ public:
     this->Create(parent, id, pos, size, style, validator );
   }
 
+  ~wxDataViewCtrl();
+
  // explicit control creation
   bool Create(wxWindow *parent, wxWindowID id, wxPoint const& pos=wxDefaultPosition, wxSize const& size=wxDefaultSize, long style=0,
               wxValidator const& validator=wxDefaultValidator);

src/mac/carbon/dataview.cpp

@@ -1078,6 +1078,13 @@ IMPLEMENT_ABSTRACT_CLASS(wxDataViewColumn,wxDataViewColumnBase)
 //-----------------------------------------------------------------------------
 // wxDataViewCtrl
 //-----------------------------------------------------------------------------
+
+
+wxDataViewCtrl::~wxDataViewCtrl()
+{
+   ClearColumns();
+}
+
 #pragma mark -
 void wxDataViewCtrl::Init()
 {