Include wx/object.h according to precompiled headers of wx/wx.h (with other minor cleaning).

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@38839 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/html/helpwnd.cpp

@@ -14,16 +14,16 @@
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
-#pragma hdrstop
+    #pragma hdrstop
 #endif
 
 #if wxUSE_WXHTML_HELP
 
 #ifndef WXPRECOMP
+    #include "wx/object.h"
     #include "wx/intl.h"
     #include "wx/log.h"
 
-    #include "wx/object.h"
     #include "wx/sizer.h"
 
     #include "wx/bmpbuttn.h"