MFH: r526434

sysutils/e2fsprogs: Fix powerpc32 build/self-tests
libext2fs: avoid array buffer overruns caused by insane directory blocks

PR: 242798
Reported by: canardo909@gmx.com
Obtained from: Theodore Y. Ts'o <tytso@mit.edu> (upstream maintainer)

Approved by: ports-secteam (blanket, fixing broken self-test by small patch)