Merge branch 'nd/fix-directory-attrs-off-by-one'

Fix performance regression introduced by an earlier change to let
attributes apply to directories.

Needs to be merged to maint, as 94bc671a was merged there already.

* nd/fix-directory-attrs-off-by-one:
  attr: avoid calling find_basename() twice per path
  attr: fix off-by-one directory component length calculation

diff --cc attr.c
Simple merge