Android U Beta 4 GPL
check_f2fs: fix wrong calculation of # of sectors am: 59381daac2

Original change: https://android-review.googlesource.com/c/platform/external/f2fs-tools/+/2578895

Change-Id: I753b7d3a17723d0a1918110307e6b3acd53bad01
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>