Removed some unused variables in Windows code.

webrtc/base/winping.cc

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 106 matching lines @@
 
 //////////////////////////////////////////////////////////////////////
 // Global Constants and Types
 //////////////////////////////////////////////////////////////////////
 
 const char * const ICMP_DLL_NAME = "Iphlpapi.dll";
 const char * const ICMP_CREATE_FUNC = "IcmpCreateFile";
 const char * const ICMP_CLOSE_FUNC = "IcmpCloseHandle";
 const char * const ICMP_SEND_FUNC = "IcmpSendEcho";
 const char * const ICMP6_CREATE_FUNC = "Icmp6CreateFile";
-const char * const ICMP6_CLOSE_FUNC = "Icmp6CloseHandle";
 const char * const ICMP6_SEND_FUNC = "Icmp6SendEcho2";
 
 inline uint32 ReplySize(uint32 data_size, int family) {
   if (family == AF_INET) {
     // A ping error message is 8 bytes long, so make sure we allow for at least
     // 8 bytes of reply data.
     return sizeof(ICMP_ECHO_REPLY) + std::max<uint32>(8, data_size);
   } else if (family == AF_INET6) {
     // Per MSDN, Send6IcmpEcho2 needs at least one ICMPV6_ECHO_REPLY,
     // 8 bytes for ICMP header, _and_ an IO_BLOCK_STATUS (2 pointers),
@@ skipping 214 matching lines @@
 // Return Value:
 //
 //     Returns the number of ICMP_ECHO_REPLY structures stored in ReplyBuffer.
 //     The status of each reply is contained in the structure. If the return
 //     value is zero, extended error information is available via
 //     GetLastError().
 //
 //////////////////////////////////////////////////////////////////////
 
 } // namespace rtc