netfilter: ipset: Return bool values instead of int

Signed-off-by: Sergey Popovich <popovich_sergei@mail.ua>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --cc net/netfilter/ipset/ip_set_hash_ip.c
Simple merge

diff --cc net/netfilter/ipset/ip_set_hash_ipmark.c
Simple merge

diff --cc net/netfilter/ipset/ip_set_hash_ipport.c
Simple merge

diff --cc net/netfilter/ipset/ip_set_hash_ipportip.c
Simple merge

diff --cc net/netfilter/ipset/ip_set_hash_ipportnet.c
Simple merge

diff --cc net/netfilter/ipset/ip_set_hash_mac.c
Simple merge

diff --cc net/netfilter/ipset/ip_set_hash_net.c
Simple merge

diff --cc net/netfilter/ipset/ip_set_hash_netiface.c
Simple merge

diff --cc net/netfilter/ipset/ip_set_hash_netport.c
Simple merge

diff --cc net/netfilter/ipset/ip_set_hash_netportnet.c
Simple merge