[automerger skipped] Don't enumerate interfaces if no interfaces were found. am: 7b753522c0 am: 1c79886d80 -s ours am: da3f1e8d5a -s ours

am skip reason: Change-Id Id9289e5a22dddceb53782d75e3caa4f6a88c6fb1 with SHA-1 c37a28e59f is in history

Change-Id: I628a5e07c8b02755b82b3a8708b14d241c97850e