[mojo-edk] Reset Port::send_on_proxy_removal after sending message.

mojo/edk/system/ports/node.cc

 // Copyright 2016 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 "mojo/edk/system/ports/node.h"
 
 #include <string.h>
 
 #include <utility>
 
@@ skipping 1252 matching lines @@
 
   if (!CanAcceptMoreMessages(port.get())) {
     // This proxy port is done. We can now remove it!
     ErasePort_Locked(port_name);
 
     if (port->send_on_proxy_removal) {
       NodeName to_node = port->send_on_proxy_removal->first;
       ScopedMessage& message = port->send_on_proxy_removal->second;
 
       delegate_->ForwardMessage(to_node, std::move(message));
+      port->send_on_proxy_removal.reset();
     }
   } else {
     DVLOG(2) << "Cannot remove port " << port_name << "@" << name_
              << " now; waiting for more messages";
   }
 }
 
 void Node::TryRemoveProxy(PortRef port_ref) {
   Port* port = port_ref.port();
   bool should_erase = false;
@@ skipping 48 matching lines @@
 
   if (num_data_bytes)
     memcpy(header + 1, data, num_data_bytes);
 
   return message;
 }
 
 }  // namespace ports
 }  // namespace edk
 }  // namespace mojo