adapting init sequence for different osx platforms

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@61380 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/osx/app.h

@@ -50,6 +50,10 @@ class WXDLLIMPEXP_CORE wxApp: public wxAppBase
     virtual bool OnInitGui();
 #endif // wxUSE_GUI
 
+#ifdef __WXOSX_IPHONE__
+    virtual int OnRun();
+#endif
+
     virtual bool ProcessIdle();
 
     // implementation only