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

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@39646 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/statusbr.cpp

@@ -18,6 +18,8 @@
 
 #if wxUSE_STATUSBAR
 
+#include "wx/statusbr.h"
+
 #ifndef WX_PRECOMP
     #include "wx/frame.h"
     #include "wx/settings.h"
@@ -29,8 +31,6 @@
 #include "wx/gtk/win_gtk.h"
 #endif
 
-#include "wx/statusbr.h"
-
 // we only have to do it here when we use wxStatusBarGeneric in addition to the
 // standard wxStatusBar class, if wxStatusBarGeneric is the same as
 // wxStatusBar, then the corresponding IMPLEMENT_DYNAMIC_CLASS is already in