Don't leak map fds in BpfCoordinator#dump. am: 555472a186 am: a6c9626b5d

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1581523

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Id5a3c980a0f9409b9342672935b9567c89422305
tree: 38c84c9285a276ca9ba28e24c5a181d4e5fde4f4
  1. tests/
  2. Tethering/
  3. .gitignore
  4. OWNERS
  5. PREUPLOAD.cfg
  6. TEST_MAPPING