further ifacecheck fixes (now only 3.3% of documented methods have a wrong signature\!)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@56756 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/richtext/richtextctrl.h

@@ -1456,7 +1456,7 @@ public:
     /**
         Loads an image from a file and writes it at the current insertion point.
     */
-    bool WriteImage(const wxString& filename, int bitmapType);
+    virtual bool WriteImage(const wxString& filename, wxBitmapType bitmapType);
 
     /**
         Writes an image block at the current insertion point.