Follow up on #77 - saddr extraction from skb after homa_add_packet?

[breakertt]

Hi John, thanks again for the merge and fix! One quick follow-up after reading the code - homa_incoming.c:765 still reads skb_canonical_ipv6_saddr(skb) after homa_add_packet, wouldn't this also a use-after-free?

HomaModule/homa_incoming.c

Line 765 in 1d10246

const struct in6_addr saddr = skb_canonical_ipv6_saddr(skb);