netfilter: nf_tables: use nft_set_lookup_global from nf_tables_newsetelem()

Replace opencoded implementation of nft_set_lookup_global() by call to
this function.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2018-03-28 12:06:50 +02:00
commit a3073c17dd