Check for bad packets in getaddrinfo.c's getanswer. am: 9ea3f1c8a5 am: 62b2f0523e am: 91b8b9dd71  -s ours am: 2ad4e6e4f6 am: c58d806231
am: ffcf543b9c

Change-Id: I4b1d461cea68db0d8b88a7e0d5755987b8c9c2d3