Merge "Fix race condition caused by fd reused for DnsResolver" into qt-dev
am: 7187dbc4e0

Change-Id: Ib33d8a7955039eb6ec40c949670a52fa2f76660a
tree: 338df8136dbca6d0307d3a3e757817c0a017c92e
  1. core/
  2. services/
  3. tests/