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

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@38920 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/xrc/xh_statbar.cpp

@@ -21,11 +21,10 @@
 
 #ifndef WX_PRECOMP
     #include "wx/string.h"
+    #include "wx/log.h"
 #endif
 
 #include "wx/frame.h"
-#include "wx/log.h"
-
 #include "wx/statusbr.h"
 
 IMPLEMENT_DYNAMIC_CLASS(wxStatusBarXmlHandler, wxXmlResourceHandler)