use wxOVERRIDE

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76220 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/containr.h

@@ -137,7 +137,7 @@ class WXDLLIMPEXP_CORE wxControlContainer : public wxControlContainerBase
 {
 protected:
     // set the focus to the child which had it the last time
-    virtual bool SetFocusToChild();
+    virtual bool SetFocusToChild() wxOVERRIDE;
 };
 
 #else // !wxHAS_NATIVE_TAB_TRAVERSAL