Ignore the AlternateLBA field in the GPT headers.

src/platform/vboot_reference/tests/cgptlib_test.c

Index: src/platform/vboot_reference/tests/cgptlib_test.c
diff --git a/src/platform/vboot_reference/tests/cgptlib_test.c b/src/platform/vboot_reference/tests/cgptlib_test.c
index 80dc264d0c906aa8cf426b89b6d05c92374d6b23..b2b028dcfd8bfd7614034af5305078ac9a9eabe4 100644
--- a/src/platform/vboot_reference/tests/cgptlib_test.c
+++ b/src/platform/vboot_reference/tests/cgptlib_test.c
@@ -458,15 +458,15 @@ static int MyLbaTest() {
   h1->alternate_lba++;
   h2->alternate_lba++;
   RefreshCrc32(gpt);
-  EXPECT(1 == CheckHeader(h1, 0, gpt->drive_sectors));
-  EXPECT(1 == CheckHeader(h2, 1, gpt->drive_sectors));
+  EXPECT(0 == CheckHeader(h1, 0, gpt->drive_sectors));
+  EXPECT(0 == CheckHeader(h2, 1, gpt->drive_sectors));
 
   BuildTestGptData(gpt);
   h1->alternate_lba--;
   h2->alternate_lba--;
   RefreshCrc32(gpt);
-  EXPECT(1 == CheckHeader(h1, 0, gpt->drive_sectors));
-  EXPECT(1 == CheckHeader(h2, 1, gpt->drive_sectors));
+  EXPECT(0 == CheckHeader(h1, 0, gpt->drive_sectors));
+  EXPECT(0 == CheckHeader(h2, 1, gpt->drive_sectors));
 
   BuildTestGptData(gpt);
   h1->entries_lba++;