[NaCl SDK] nacl_io: Fix inet_ntop to be consistent with glibc.

native_client_sdk/src/libraries/nacl_io/syscalls/inet_ntoa.cc

-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "nacl_io/ossocket.h"
-#if defined(PROVIDES_SOCKET_API) && !defined(__GLIBC__)
-
-#include <string.h>
-#include "sdk_util/macros.h"
-
-static uint8_t GetByte(const void* addr, int byte) {
-  const char* buf = static_cast<const char*>(addr);
-  return static_cast<uint8_t>(buf[byte]);
-}
-
-EXTERN_C_BEGIN
-
-char* inet_ntoa(struct in_addr in) {
-  static char addr[INET_ADDRSTRLEN];
-  snprintf(addr, INET_ADDRSTRLEN, "%u.%u.%u.%u",
-           GetByte(&in, 0), GetByte(&in, 1),
-           GetByte(&in, 2), GetByte(&in, 3));
-  return addr;
-}
-
-EXTERN_C_END
-
-#endif  // defined(PROVIDES_SOCKET_API) && !defined(__GLIBC__)