implement out-of-line destructors where needed instead of using __DARWIN__

specific conditional compilation


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13447 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/statbmp.h

@@ -30,9 +30,7 @@ WXDLLEXPORT_DATA(extern const wxChar*) wxStaticBitmapNameStr;
 class WXDLLEXPORT wxStaticBitmapBase : public wxControl
 {
  public:
-#ifdef __DARWIN__
-    ~wxStaticBitmapBase() { }
-#endif
+    virtual ~wxStaticBitmapBase();
     
     // our interface
     virtual void SetIcon(const wxIcon& icon) = 0;