call Clear() in dtor: this is necessary at least to clean up client object data

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50587 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/listbox.cpp

@@ -198,7 +198,7 @@ bool wxListBox::Create(wxWindow *parent,
 
 wxListBox::~wxListBox()
 {
-    Free();
+    Clear();
 }
 
 WXDWORD wxListBox::MSWGetStyle(long style, WXDWORD *exstyle) const