Speculative fix for the windows compilation failure.

runtime/bin/socket_win.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include <winsock2.h>
 #include <ws2tcpip.h>
 #include <mswsock.h>
 
 #include "bin/builtin.h"
 #include "bin/eventhandler.h"
@@ skipping 49 matching lines @@
   SocketHandle* socket_handle = reinterpret_cast<SocketHandle*>(fd);
   struct sockaddr_in socket_address;
   socklen_t size = sizeof(socket_address);
   if (getpeername(socket_handle->socket(),
                   reinterpret_cast<struct sockaddr *>(&socket_address),
                   &size)) {
     fprintf(stderr, "Error getpeername: %s\n", strerror(errno));
     return false;
   }
   if (inet_ntop(socket_address.sin_family,
-                reinterpret_cast<const void *>(&socket_address.sin_addr),
+                reinterpret_cast<void *>(&socket_address.sin_addr),
                 host,
                 INET_ADDRSTRLEN) == NULL) {
     fprintf(stderr, "Error inet_ntop: %s\n", strerror(errno));
     return false;
   }
   *port = ntohs(socket_address.sin_port);
   return true;
-
+}
 
 intptr_t Socket::CreateConnect(const char* host, const intptr_t port) {
   SOCKET s = socket(AF_INET, SOCK_STREAM, 0);
   if (s == INVALID_SOCKET) {
     return -1;
   }
 
   linger l;
   l.l_onoff = 1;
   l.l_linger = 10;
@@ skipping 154 matching lines @@
   if (status == SOCKET_ERROR) {
     DWORD rc = WSAGetLastError();
     closesocket(s);
     SetLastError(rc);
     return -1;
   }
 
   ListenSocket* listen_socket = new ListenSocket(s);
   return reinterpret_cast<intptr_t>(listen_socket);
 }