Merge the 2018-05-05 SPL branch from AOSP-Partner into android-7.1.2_r36

* origin/security-aosp-nyc-mr2-release:
  Add extra (size_t) cast to avoid compiler warning.
  Make dnsmasq more stable.

Issue: FP2N-106
Change-Id: I3945aa1887612c6ecc4c69449e61211074ec69d2