[NaCl SDK] nacl_io: fix invalid access to string data.

native_client_sdk/src/libraries/nacl_io/html5fs/html5_fs.cc

 // Copyright 2013 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 "nacl_io/html5fs/html5_fs.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <stdlib.h>
 #include <string.h>
@@ skipping 129 matching lines @@
     return PPErrorToErrno(result);
 
   return 0;
 }
 
 Error Html5Fs::Rename(const Path& path, const Path& newpath) {
   Error error = BlockUntilFilesystemOpen();
   if (error)
     return error;
 
-  const char* oldpath_full = GetFullPath(path).Join().c_str();
+  std::string oldpath_full = GetFullPath(path).Join();
   ScopedResource fileref_resource(
-      ppapi(), file_ref_iface_->Create(filesystem_resource_, oldpath_full));
+      ppapi(),
+      file_ref_iface_->Create(filesystem_resource_, oldpath_full.c_str()));
   if (!fileref_resource.pp_resource())
     return ENOENT;
 
-  const char* newpath_full = GetFullPath(newpath).Join().c_str();
+  std::string newpath_full = GetFullPath(newpath).Join();
   ScopedResource new_fileref_resource(
-      ppapi(), file_ref_iface_->Create(filesystem_resource_, newpath_full));
+      ppapi(),
+      file_ref_iface_->Create(filesystem_resource_, newpath_full.c_str()));
   if (!new_fileref_resource.pp_resource())
     return ENOENT;
 
   int32_t result = file_ref_iface_->Rename(fileref_resource.pp_resource(),
                                            new_fileref_resource.pp_resource(),
                                            PP_BlockUntilComplete());
   if (result != PP_OK)
     return PPErrorToErrno(result);
 
   return 0;
@@ skipping 125 matching lines @@
 }
 
 void Html5Fs::FilesystemOpenCallback(int32_t result) {
   AUTO_LOCK(filesysem_open_lock_);
   filesystem_open_has_result_ = true;
   filesystem_open_error_ = PPErrorToErrno(result);
   pthread_cond_signal(&filesystem_open_cond_);
 }
 
 }  // namespace nacl_io