Fix formatting: remove trailing spaces, #endif with comments (> 10 lines)

library/net.c

@@ -1,7 +1,7 @@
 /*
  *  TCP networking functions
  *
- *  Copyright (C) 2006-2013, Brainspark B.V.
+ *  Copyright (C) 2006-2014, Brainspark B.V.
  *
  *  This file is part of PolarSSL (http://www.polarssl.org)
  *  Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
@@ -572,4 +572,4 @@ void net_close( int fd )
     close( fd );
 }
 
-#endif
+#endif /* POLARSSL_NET_C */