Fix hybrid MBR recognition on --android-dump am: 20a492d803

Original change: https://android-review.googlesource.com/c/platform/external/gptfdisk/+/2781737

Change-Id: Ic909a99e3e9d6bc6e216a49714a3dacb6b24b368
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>