Snippets for addrwatch 1.0.2 from Alpine s390x

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-s390x/community/addrwatch/addrwatch-1.0.2-r1.log.

• parse.c:130:36: warning: comparison of integer expressions of different signedness: 'unsigned int' and 'int' [-Wsign-compare]
    130 |                         if (p->len < (ip6e->ip6e_len + 1) * 8) {
        |                                    ^
  

• mcache.c:56:51: warning: 'calloc' sizes specified with 'sizeof' in the earlier argument and not in the later argument [-Wcalloc-transposed-args]
     56 |         node = (struct mcache_node *)calloc(sizeof(*node), 1);
        |                                                   ^
  

• addrwatch.c:534:17: warning: 'pcap_lookupdev' is deprecated: use 'pcap_findalldevs' and use the first device [-Wdeprecated-declarations]
    534 |                 dev = pcap_lookupdev(errbuf);
        |                 ^~~
  

• storage.c:27:46: warning: 'calloc' sizes specified with 'sizeof' in the earlier argument and not in the later argument [-Wcalloc-transposed-args]
     27 |         ip = (struct ip_node *)calloc(sizeof(struct ip_node), 1);
        |                                              ^~~~~~