access-specifier fixes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@56274 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/stackwalk.h

@@ -55,11 +55,6 @@ public:
     */
     virtual ~wxStackWalker();
 
-    /**
-        This function must be overrided to process the given frame.
-    */
-    void OnStackFrame(const wxStackFrame& frame);
-
     /**
         Enumerate stack frames from the current location, skipping the initial
         number of them (this can be useful when Walk() is called from some known
@@ -77,6 +72,12 @@ public:
         Up to @a maxDepth frames are walked from the innermost to the outermost one.
     */
     virtual void WalkFromException(size_t maxDepth = 200);
+
+protected:
+    /**
+        This function must be overrided to process the given frame.
+    */
+    void OnStackFrame(const wxStackFrame& frame);
 };