Minor cleanup in use of intptr_t vs int

runtime/bin/dbg_connection_macos.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 "platform/globals.h"
 #if defined(TARGET_OS_MACOS)
 
 #include <errno.h>  // NOLINT
 #include <stdio.h>  // NOLINT
 #include <stdlib.h>  // NOLINT
@@ skipping 53 matching lines @@
       total_read += bytes_read;
       remaining -= bytes_read;
     }
   }
   ASSERT(remaining >= 0);
   return remaining == 0;
 }
 
 
 void DebuggerConnectionImpl::HandleEvent(struct kevent* event) {
-  int ident = event->ident;
+  intptr_t ident = event->ident;
   if (ident == DebuggerConnectionHandler::listener_fd_) {
     if (DebuggerConnectionHandler::IsConnected()) {
       FATAL("Cannot connect to more than one debugger.\n");
     }
     intptr_t fd = ServerSocket::Accept(ident);
     if (fd < 0) {
       FATAL("Accepting new debugger connection failed.\n");
     }
     FDUtils::SetBlocking(fd);
     DebuggerConnectionHandler::AcceptDbgConnection(fd);
@@ skipping 16 matching lines @@
       Log::Print("Received sync message id %d.\n", msg.msg_id);
     }
   } else {
     Log::Print("unexpected: receiving debugger connection event.\n");
     UNIMPLEMENTED();
   }
 }
 
 
 void DebuggerConnectionImpl::Handler(uword args) {
-  static const intptr_t kMaxEvents = 4;
+  static const int kMaxEvents = 4;
   struct kevent events[kMaxEvents];
 
   while (1) {
     // Wait indefinitely for an event.
     int result = TEMP_FAILURE_RETRY(
         kevent(kqueue_fd_, NULL, 0, events, kMaxEvents, NULL));
     if (result == -1) {
       const int kBufferSize = 1024;
       char error_message[kBufferSize];
       strerror_r(errno, error_message, kBufferSize);
@@ skipping 63 matching lines @@
 
 
 intptr_t DebuggerConnectionImpl::Receive(intptr_t socket, char* buf, int len) {
   return TEMP_FAILURE_RETRY(read(socket, buf, len));
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_MACOS)