moved to appropriate 'protected' sections all functions wrongly placed in 'public' sections

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@56585 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/dataview.h

@@ -203,11 +203,6 @@ public:
     */
     wxDataViewModel();
 
-    /**
-        Destructor. This should not be called directly. Use DecRef() instead.
-    */
-    virtual ~wxDataViewModel();
-
     /**
         Adds a wxDataViewModelNotifier to the model.
     */
@@ -369,6 +364,13 @@ public:
     */
     virtual bool ValueChanged(const wxDataViewItem& item,
                               unsigned int col);
+
+protected:
+
+    /**
+        Destructor. This should not be called directly. Use DecRef() instead.
+    */
+    virtual ~wxDataViewModel();
 };