Do not write past end of inotify event structure. am: 855803fd4a am: 1da9219007 am: d68122fa47

Original change: https://googleplex-android-review.googlesource.com/c/platform/bootable/recovery/+/16034931

Change-Id: Ifd1f30814f6067ecc4c777927b8e6f31da3bb399