make access specifiers for the virtual functions match their access in the base class (patch 1400131)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@37393 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/listctrl.cpp

@@ -520,8 +520,6 @@ public:
 
     virtual ~wxListMainWindow();
 
-    wxWindow *GetMainWindowOfCompositeControl() { return GetParent(); }
-
     bool HasFlag(int flag) const { return m_parent->HasFlag(flag); }
 
     // return true if this is a virtual list control
@@ -780,6 +778,8 @@ public:
     wxListTextCtrl*     m_textctrl;
 
 protected:
+    wxWindow *GetMainWindowOfCompositeControl() { return GetParent(); }
+
     // the total count of items in a virtual list control
     size_t m_countVirt;