net-test: close() fixes for ping6_test.py am: 0cee060324 am: 7fa8323edf am: 4b147dbcda am: d0ff3478b9 Original change: https://android-review.googlesource.com/c/kernel/tests/+/2508300 Change-Id: I4b392a30593c3fabe91342b568f02c286d737118 Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>