Revert "using #ifdef wxABORT_ON_CONFIG_ERROR not just #if as elsewhere"

This reverts commit r74656, because it breaks initialization order by
calling OnInit() too late.  See
https://groups.google.com/d/topic/wx-dev/H5vgc2VO7K4/discussion

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74854 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/osx/app.h

@@ -152,9 +152,8 @@ public:
     virtual void         OSXOnWillTerminate();
 
 private:
-#if wxOSX_USE_IPHONE
     bool                m_onInitResult;
-#endif
+    
 public:
 
 #endif