Logic error in update_certificate_downloads

In current Git master, the update_certificate_downloads function in src/or/networkstatus.c contains the following code:

  if (current_ns_consensus)
    authority_certs_fetch_missing(current_ns_consensus, now);
  if (current_ns_consensus)
    authority_certs_fetch_missing(current_md_consensus, now);

The second if statement should test current_md_consensus, not current_ns_consensus.