[dovecot/core] d5ee3e: lib-dns: Remove useless code

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: d5ee3ec7c01ae99ac136a9ca3963ae6491bfe6df
      https://github.com/dovecot/core/commit/d5ee3ec7c01ae99ac136a9ca3963ae6491bfe6df
  Author: Aki Tuomi <aki.tuomi at dovecot.fi>
  Date:   2018-08-24 (Fri, 24 Aug 2018)

  Changed paths:
    M src/lib-dns/dns-lookup.c

  Log Message:
  -----------
  lib-dns: Remove useless code

Found by scan-build



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