[dart:io] Don't close stdin with a socket finalizer

runtime/bin/socket_win.cc

 // Copyright (c) 2013, 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.
 
 #if !defined(DART_IO_DISABLED)
 
 #include "platform/globals.h"
 #if defined(HOST_OS_WINDOWS)
 
 #include "bin/socket.h"
@@ skipping 64 matching lines @@
   WORD version_requested = MAKEWORD(2, 2);
   err = WSAStartup(version_requested, &winsock_data);
   if (err == 0) {
     socket_initialized = true;
   } else {
     Log::PrintErr("Unable to initialize Winsock: %d\n", WSAGetLastError());
   }
   return (err == 0);
 }
 
+
 intptr_t Socket::Available(intptr_t fd) {
   ClientSocket* client_socket = reinterpret_cast<ClientSocket*>(fd);
   return client_socket->Available();
 }
 
 
 intptr_t Socket::Read(intptr_t fd, void* buffer, intptr_t num_bytes) {
   Handle* handle = reinterpret_cast<Handle*>(fd);
   return handle->Read(buffer, num_bytes);
 }
@@ skipping 186 matching lines @@
 
 
 intptr_t Socket::GetStdioHandle(intptr_t num) {
   if (num != 0) {
     return -1;
   }
   HANDLE handle = GetStdHandle(STD_INPUT_HANDLE);
   if (handle == INVALID_HANDLE_VALUE) {
     return -1;
   }
-  StdHandle* std_handle = new StdHandle(handle);
+  StdHandle* std_handle = StdHandle::Stdin(handle);
+  std_handle->Retain();
   std_handle->MarkDoesNotSupportOverlappedIO();
   std_handle->EnsureInitialized(EventHandler::delegate());
   return reinterpret_cast<intptr_t>(std_handle);
 }
 
 
 intptr_t ServerSocket::Accept(intptr_t fd) {
   ListenSocket* listen_socket = reinterpret_cast<ListenSocket*>(fd);
   ClientSocket* client_socket = listen_socket->Accept();
   if (client_socket != NULL) {
@@ skipping 379 matching lines @@
   return setsockopt(handle->socket(), proto, MCAST_LEAVE_GROUP,
                     reinterpret_cast<char*>(&mreq), sizeof(mreq)) == 0;
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(HOST_OS_WINDOWS)
 
 #endif  // !defined(DART_IO_DISABLED)