Avoid calling res_init() since it's a private API in bionic

In 4.3BSD, res_init() function reads the config files (resolv.conf)
to get the default domain name, search order and name server
address(es).  However, in bionic, resolv.conf is already ignored,
so it is a no-op for actual functionality.

Change-Id: Ib11fee052ff0b2bae8f5a4f036b7cdc1d1b059a2
1 file changed