Better compile fix by Pierre d'Herbemont

THANKS

@@ -141,6 +141,7 @@ Paul Mackerras <paulus at linuxcare.com.au> - AltiVec IDCT and motion
 Pavlov Konstantin “thresh” - several Linux build system fixes
 Petr Vacek - FTP cleartext authentication
 Philippe Van Hecke <philippe at belnet dot be> - SAP header hash patch
+Pierre d'Herbemont <<pdherbemont at free dot fr> - Compile fix
 Pierre Marc Dumuid <pierre.dumuid at adelaide dot edu dot au> - Playlist patches
 Pittayakom Saingtong <develop5 qt datawiz dot co dot th> - Thai localisation
 Rafaël Carré <funman at videolan org> - Audioscrobbler plugin

src/stream_output/stream_output.h

@@ -24,9 +24,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. ***************************************************************************/
 
 #include <vlc_sout.h>
-#if defined( WIN32 )
-#   include <winsock2.h>
-#endif
+#include <vlc_network.h>
 
 /****************************************************************************
  * sout_packetizer_input_t: p_sout <-> p_packetizer