netfilter: nf_tables: remove unused variable in nf_tables_dump_set()

The nfmsg variable is not used (except in sizeof operator which does
not care about its value) between the first and second time it is
assigned the value.  Furthermore, nlmsg_data has no side effects, so
the assignment can be safely removed.

Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index aa4df58d5e564db96d06f44520ddcc249ac9dc91..37f0e6988ec4ecd708a089ddce2888422fecfd3f 100644 (file)
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -2505,9 +2505,8 @@ static int nf_tables_dump_set(struct sk_buff *skb, struct netlink_callback *cb)
        u32 portid, seq;
        int event, err;
 
-       nfmsg = nlmsg_data(cb->nlh);
-       err = nlmsg_parse(cb->nlh, sizeof(*nfmsg), nla, NFTA_SET_ELEM_LIST_MAX,
-                         nft_set_elem_list_policy);
+       err = nlmsg_parse(cb->nlh, sizeof(struct nfgenmsg), nla,
+                         NFTA_SET_ELEM_LIST_MAX, nft_set_elem_list_policy);
        if (err < 0)
                return err;