net-test: close() fixes for ping6_test.py am: 0cee060324 am: 7fa8323edf am: 4b147dbcda Original change: https://android-review.googlesource.com/c/kernel/tests/+/2508300 Change-Id: Ia9af10c97ba50ade7e9240495a3094ee905058f1 Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>