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

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

Index: native_client_sdk/src/libraries/nacl_io/syscalls/inet_ntoa.c
diff --git a/native_client_sdk/src/libraries/nacl_io/syscalls/inet_ntoa.cc b/native_client_sdk/src/libraries/nacl_io/syscalls/inet_ntoa.c
similarity index 77%
rename from native_client_sdk/src/libraries/nacl_io/syscalls/inet_ntoa.cc
rename to native_client_sdk/src/libraries/nacl_io/syscalls/inet_ntoa.c
index c6cf6107dff4d74cf0dbeddf95d7bfb0148ab68e..380cbc8791ca04bcf2ebb11c7a050dfed8f9820a 100644
--- a/native_client_sdk/src/libraries/nacl_io/syscalls/inet_ntoa.cc
+++ b/native_client_sdk/src/libraries/nacl_io/syscalls/inet_ntoa.c
@@ -3,18 +3,14 @@
 // 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"
+#if defined(PROVIDES_SOCKET_API) && !defined(__GLIBC__)
 
 static uint8_t GetByte(const void* addr, int byte) {
-  const char* buf = static_cast<const char*>(addr);
-  return static_cast<uint8_t>(buf[byte]);
+  const char* buf = (const char*)addr;
+  return (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",
@@ -23,6 +19,4 @@ char* inet_ntoa(struct in_addr in) {
   return addr;
 }
 
-EXTERN_C_END
-
 #endif  // defined(PROVIDES_SOCKET_API) && !defined(__GLIBC__)