staging: lustre: lov: Add a blank line after declarations in lov_request.c

Fix the following checkpatch.pl issue in lov_request.c:
WARNING: Missing a blank line after declarations

Signed-off-by: Riccardo Lucchese <riccardo.lucchese@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>