Mach port scopers should use get() instead of type conversion operators

handler/mac/exception_handler_server.h

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 39 matching lines @@
   //! encountered, it will log a message and terminate execution. Receipt of an
   //! invalid message on receive_port() will cause a message to be logged, but
   //! this method will continue running normally.
   void Run(UniversalMachExcServer::Interface* exception_interface);
 
   //! \brief Returns the receive right that will be monitored for exception
   //!     messages.
   //!
   //! The caller does not take ownership of this port. The caller must not use
   //! this port for any purpose other than to make send rights for clients.
-  mach_port_t receive_port() const { return receive_port_; }
+  mach_port_t receive_port() const { return receive_port_.get(); }
 
  private:
   base::mac::ScopedMachReceiveRight receive_port_;
 
   DISALLOW_COPY_AND_ASSIGN(ExceptionHandlerServer);
 };
 
 }  // namespace crashpad
 
 #endif  // CRASHPAD_HANDLER_MAC_EXCEPTION_HANDLER_SERVER_H_