After a code cleanup, we get a harmless warning about a variable
that is unused when CONFIG_FS_POSIX_ACL is disabled:
drivers/staging/lustre/lustre/llite/xattr.c: In function 'll_xattr_get_common':
drivers/staging/lustre/lustre/llite/xattr.c:312:24: error: unused variable 'lli' [-Werror=unused-variable]
This puts the variable declaration into the same #ifdef.