netstat memory leak fixed.

valgrind --leak-check=full netstat
(x86_64)

before:
  definitely lost: 1,536 bytes in 64 blocks
  indirectly lost: 479 bytes in 64 blocks
 ERROR SUMMARY: 1 errors from 1 contexts

after:
  definitely lost: 0 bytes in 0 blocks
  indirectly lost: 0 bytes in 0 blocks
 ERROR SUMMARY: 0 errors from 0 contexts

lib/inet.c

@@ -396,6 +396,9 @@ static int read_services(void)
 	    add2list(&udp_name, item);
 	} else if (!strcmp(se->s_proto, "raw")) {
 	    add2list(&raw_name, item);
+	} else { /* sctp, ddp, dccp */
+	    free(item->name);
+	    free(item);
 	}
     }
     endservent();