ifacecheck fixes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@55805 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/checkbox.h

@@ -162,6 +162,6 @@ public:
         Asserts when the checkbox is a 2-state checkbox and setting the state
         to wxCHK_UNDETERMINED.
     */
-    virtual void Set3StateValue(const wxCheckBoxState state);
+    void Set3StateValue(wxCheckBoxState state);
 };