Do not access memory freed by WTSFreeMemory().

remoting/host/win/wts_terminal_monitor.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 "remoting/host/win/wts_terminal_monitor.h"
 
 #include <windows.h>
 #include <winternl.h>
 #include <wtsapi32.h>
 
@@ skipping 142 matching lines @@
   DWORD session_info_count;
   if (!WTSEnumerateSessions(WTS_CURRENT_SERVER_HANDLE, 0, 1, &session_info,
                             &session_info_count)) {
     LOG_GETLASTERROR(ERROR) << "Failed to enumerate all sessions";
     return kInvalidSessionId;
   }
   for (DWORD i = 0; i < session_info_count; ++i) {
     net::IPEndPoint endpoint;
     if (GetEndpointForSessionId(session_info[i].SessionId, &endpoint) &&
         endpoint == client_endpoint) {
+      uint32 session_id = session_info[i].SessionId;
       WTSFreeMemory(session_info);
-      return session_info[i].SessionId;
+      return session_id;
     }
   }
 
   // |client_endpoint| is not associated with any session.
   WTSFreeMemory(session_info);
   return kInvalidSessionId;
 }
 
 WtsTerminalMonitor::WtsTerminalMonitor() {
 }
 
 }  // namespace remoting