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

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I6f674f644b3afbc762423c903a1460a215be712d
tree: dc14351f51ff91bbeadb478f8c88b70cfd9c3e38
  1. tests/
  2. Tethering/
  3. .gitignore
  4. OWNERS
  5. PREUPLOAD.cfg
  6. TEST_MAPPING