netfilter: fix spelling errors

Signed-off-by: Stephen Hemminger <[e-mail]>
Signed-off-by: Pablo Neira Ayuso <[e-mail]>

net/netfilter/nf_conntrack_helper.c

···
 }
 EXPORT_SYMBOL_GPL(__nf_ct_try_assign_helper);
 
-/* appropiate ct lock protecting must be taken by caller */
+/* appropriate ct lock protecting must be taken by caller */
 static inline int unhelp(struct nf_conntrack_tuple_hash *i,
 			 const struct nf_conntrack_helper *me)
 {

net/netfilter/nf_tables_api.c

···
 	const struct nfgenmsg *nfmsg = nlmsg_data(nlh);
 	int err;
 
-	/* Verify existance before starting dump */
+	/* Verify existence before starting dump */
 	err = nft_ctx_init_from_setattr(&ctx, skb, nlh, nla);
 	if (err < 0)
 		return err;