commit df338699853d02d2a562b9a88beab6f34ced5f83
author Rocco Yue <rocco.yue@mediatek.com> Mon Oct 19 19:59:38 2020 +0800
committer Maciej Żenczykowski <maze@google.com> Tue Oct 20 09:23:49 2020 +0000
tree 502f105f02f56b2d69eb282a074b6eecdc9f405f
parent 0149a84b33bc788f62bab27f8e536cc7ed9900f7

Fix some build errors when CLAT_DEBUG is set to 1

After seteing CLAT_DEBUG to 1 to enable debug logging,
there were some build errors, as shown below:

external/android-clat/dump.c:205:6: error: conflicting types for 'dump_tcp'
external/android-clat/dump.c:214:6: error: conflicting types for 'dump_tcp6'
external/android-clat/dump.c:229:30: error:
invalid application of 'sizeof' to an incomplete type 'struct tun_pi'
  for (i = 0; i < len && i < PACKETLEN; i++) {
                             ^~~~~~~~~

Bug: 171277941
Test: builds and boots
Test: connect to ipv6-only wifi network: ping 8.8.8.8 still works
Change-Id: Ifb5d84951c4832ae4e3eb8a24329df0243f6ee55