deps: sync with upstream bagder/c-ares@bba4dc5

Fixes: https://github.com/iojs/io.js/issues/1676
PR-URL: https://github.com/iojs/io.js/pull/1678


Reviewed-By: Fedor Indutny <fedor@indutny.com>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>