Fix fuse-bpf can lead to folders not be viewable erroneously

As reported by Mao Wang <maow@qti.qualcomm.com>, we must not assume
dirents are zero terminated

Bug: 290657703
Test: fuse-bpf is still running, still hiding directories correctly
Change-Id: If78c43d4c822e0222aaf78aa5c8153f724503524
Merged-In: If78c43d4c822e0222aaf78aa5c8153f724503524
1 file changed