Fix up uninitialized member variable

ipc/ipc_channel_posix.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ipc/ipc_channel_posix.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <stddef.h>
 #include <sys/types.h>
@@ skipping 280 matching lines @@
       message_send_bytes_written_(0),
       server_listen_pipe_(-1),
       pipe_(-1),
       client_pipe_(-1),
 #if defined(IPC_USES_READWRITE)
       fd_pipe_(-1),
       remote_fd_pipe_(-1),
 #endif  // IPC_USES_READWRITE
       pipe_name_(channel_handle.name),
       listener_(listener),
+      must_unlink_(false),
       factory_(this) {
   // Check to see if we want to implement using domain sockets.
   bool uses_domain_socket = false;
   bool listening_socket = false;
   if (mode_ == MODE_NAMED_SERVER) {
     uses_domain_socket = true;
     listening_socket = true;
     mode_ = MODE_SERVER;
   } else if (mode_ == MODE_NAMED_CLIENT) {
     uses_domain_socket = true;
@@ skipping 828 matching lines @@
 
 bool Channel::HasAcceptedConnection() const {
   return channel_impl_->HasAcceptedConnection();
 }
 
 void Channel::ResetToAcceptingConnectionState() {
   channel_impl_->ResetToAcceptingConnectionState();
 }
 
 }  // namespace IPC