staging: lustre: lustre: ptlrpc: Fix pointer declaration

This patch fixes the following checkpatch.pl issue in client.c:
ERROR: "foo * bar" should be "foo *bar"

Signed-off-by: Hema Prathaban <hemaklnce@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>