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/msw/ole/oleutils.cpp

@@ -21,13 +21,15 @@
 #include "wx/wxprec.h"
 
 #if defined(__BORLANDC__)
-#pragma hdrstop
+    #pragma hdrstop
 #endif
 
-#include  "wx/log.h"
-
 #if wxUSE_OLE
 
+#ifndef WX_PRECOMP
+    #include "wx/log.h"
+#endif
+
 #ifndef __CYGWIN10__
 
 #include "wx/msw/private.h"