Enable attributes to display and set properly.

src/platform/vboot_reference/utility/cgpt/cgpt_add_modify_delete.c

 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  * Update GPT attribute bits.
  */
 #include <getopt.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include "cgpt.h"
@@ skipping 224 matching lines @@
   if (size_lba != NOT_INITED) {
     entry->ending_lba = entry->starting_lba + size_lba - 1;
     ++dirty;
   }
   if (name[0]) {
     UTF8ToUTF16((uint8_t*)name, entry->name);
     ++dirty;
   }
 
   if (command == DELETE) {
-    Guid unused = GPT_ENT_TYPE_UNUSED;
-    Memcpy(&entry->type, &unused, sizeof(Guid));
+    Memcpy(&entry->type, &guid_unused, sizeof(Guid));
   }
 
   if (dirty) {
     uint32_t valid_entries;
 
     valid_entries = drive.gpt.valid_entries;
     if ((valid_entries != CheckValidEntries(&drive.gpt)) ||
         (valid_entries != CheckOverlappedPartition(&drive.gpt))) {
       printf("\n[ERROR] Your change makes GPT invalid (or worse). "
              "Please check your arguments.\n\n");
@@ skipping 11 matching lines @@
                            GPT_MODIFIED_HEADER2 | GPT_MODIFIED_ENTRIES2);
     UpdateCrc(&drive.gpt);
   }
   DriveClose(&drive);
   return CGPT_OK;
 
 error_close:
   DriveClose(&drive);
   return CGPT_FAILED;
 }