nfsd: Fix bad reserving space for encoding rdattr_error
nfsd: Fix bad reserving space for encoding rdattr_error

Introduced by commit 561f0ed498 (nfsd4: allow large readdirs).

Signed-off-by: Kinglong Mee <16a37b8b71ffafad4e89ce1ff841da282b29daf2@gmail.com>
Signed-off-by: J. Bruce Fields <51738506c1b2ccb0761f23bdc612c93babf738ea@redhat.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs