windows fixes

include/libtorrent/file.hpp

@@ -54,7 +54,9 @@ POSSIBILITY OF SUCH DAMAGE.
 
 #ifdef TORRENT_WINDOWS
 // windows part
+#ifndef WIN32_LEAN_AND_MEAN
 #define WIN32_LEAN_AND_MEAN
+#endif
 #include <windows.h>
 #include <winioctl.h>
 #else

src/create_torrent.cpp

@@ -39,10 +39,8 @@ POSSIBILITY OF SUCH DAMAGE.
 #include <boost/date_time/gregorian/gregorian.hpp>
 #include <boost/bind.hpp>
 
-#ifndef TORRENT_WINDOWS
 #include <sys/types.h>
 #include <sys/stat.h>
-#endif
 
 namespace gr = boost::gregorian;