block/rbd: fix memory leak Variable local_err going out of scope leaks the storage it points to. Cc: Markus Armbruster <armbru@redhat.com> Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Amos Kong <akong@redhat.com> Message-id: 1417674851-6248-1-git-send-email-arei.gonglei@huawei.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>