dns/c-ares: update 1.11.0 -> 1.12.0
- see https://daniel.haxx.se/blog/2016/10/14/a-single-byte-write-opened-a-root-execution-exploit/ for a nice writeup of the CVE.
PR: 213495
Changes: https://c-ares.haxx.se/changelog.html
Security: CVE-2016-5180
Approved by: zi (maintainer)
MFH: 2016Q4