Staging: lustre: namei.c: fix missing a blank line after declarations

This fixes a missing blank line after declarations.

Signed-off-by: Laure Millet <laure.millet@lip6.fr>
Signed-off-by: Maxime Lorrillere <maxime.lorrillere@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>