Attempt to silence warning about deprecated stuff in Boost

For some reason, after d7302d6 a warning about Boost's use of gethostbyaddr and appeared
when compiling wesnothd_connection.cpp on Windows. No idea what change in the above commit caused
it, but it seems moving the _WINSOCK_DEPRECATED_NO_WARNINGS define to wesnothd_connection.hpp silences it.

src/server/server_base.hpp

@@ -21,11 +21,6 @@
 
 #include "exceptions.hpp"
 
-// MSVC compilation throws deprecation warnings on boost's use of gethostbyaddr and gethostbyname in socket_ops.ipp
-#ifdef _WIN32
-#define _WINSOCK_DEPRECATED_NO_WARNINGS
-#endif
-
 #include <boost/asio.hpp>
 #include <boost/asio/signal_set.hpp>
 #include <boost/shared_array.hpp>

src/wesnothd_connection.hpp

@@ -15,18 +15,27 @@
 #pragma once
 
 #ifdef _WIN32
-# define BOOST_ASIO_DISABLE_IOCP
-# ifdef INADDR_ANY
-#  undef INADDR_ANY
-# endif
-# ifdef INADDR_BROADCAST
-#  undef INADDR_BROADCAST
-# endif
-# ifdef INADDR_NONE
-#  undef INADDR_NONE
-# endif
+
+// MSVC compilation throws deprecation warnings on boost's use of  gethostbyaddr and
+// gethostbyname in socket_ops.ipp. This define silences that.
+#define _WINSOCK_DEPRECATED_NO_WARNINGS
+
+#define BOOST_ASIO_DISABLE_IOCP
+
+#ifdef INADDR_ANY
+#undef INADDR_ANY
+#endif
+
+#ifdef INADDR_BROADCAST
+#undef INADDR_BROADCAST
+#endif
+
+#ifdef INADDR_NONE
+#undef INADDR_NONE
 #endif
 
+#endif // endif _WIN32
+
 #include <boost/asio.hpp>
 #include <deque>
 #include <list>