make wxWindowGTK::Init() private, it is not meant to be called from derived classes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72579 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/window.h

@@ -357,9 +357,6 @@ protected:
     virtual void DoSetToolTip( wxToolTip *tip );
 #endif // wxUSE_TOOLTIPS
 
-    // common part of all ctors (not virtual because called from ctor)
-    void Init();
-
     // Create a GtkScrolledWindow containing the given widget (usually
     // m_wxwindow but not necessarily) and assigns it to m_widget. Also shows
     // the widget passed to it.
@@ -404,6 +401,8 @@ protected:
     void ConstrainSize();
 
 private:
+    void Init();
+
     enum ScrollUnit { ScrollUnit_Line, ScrollUnit_Page, ScrollUnit_Max };
 
     // common part of ScrollLines() and ScrollPages() and could be used, in the