DevTools: Fixed suspected bug in port forwarding

content/browser/devtools/tethering_handler.cc

 // Copyright (c) 2012 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 "content/browser/devtools/tethering_handler.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/stl_util.h"
 #include "base/values.h"
@@ skipping 131 matching lines @@
       wire_buffer_size_ -= offset;
       wire_buffer_->set_offset(0);
     }
 
     if (result != net::ERR_IO_PENDING)
       OnClientWrite(result);
     return;
   }
 
   void SelfDestruct() {
-    if (wire_buffer_->offset() != wire_buffer_size_) {
+    if (wire_buffer_ && wire_buffer_->offset() != wire_buffer_size_) {
       pending_destruction_ = true;
       return;
     }
     delete this;
   }
 
  private:
   scoped_ptr<net::StreamSocket> client_socket_;
   scoped_ptr<net::StreamListenSocket> server_socket_;
   scoped_ptr<net::StreamListenSocket> accepted_socket_;
@@ skipping 136 matching lines @@
   BoundSockets::iterator it = bound_sockets_.find(port);
   if (it == bound_sockets_.end())
     return command->InternalErrorResponse("Port is not bound");
 
   delete it->second;
   bound_sockets_.erase(it);
   return command->SuccessResponse(NULL);
 }
 
 }  // namespace content