Do not write past end of inotify event structure. am: 4541d3c71e am: 1f209406dc am: 9d589b2ce8

Original change: https://googleplex-android-review.googlesource.com/c/platform/bootable/recovery/+/16034932

Change-Id: I984fc3726531e4e0c505c90672fd69c0664ce7c7