Merge "Delete command objects in DnsProxyListener destructor" am: fef7c1a1 am: 617f7d5f am: b418315a am: 9d5caa16

Original change: https://android-review.googlesource.com/c/platform/packages/modules/DnsResolver/+/2542070



Change-Id: I7ff4c66ede7d561a0773a95859682fe009adc4ac
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>