wrong query log multiline parsing

[Vlad Lesin]

The query_log plugin parses query log entries so that the whole entry interprets as query. And the whole query log entry(query itself + metadata) is sent to server.

The issue may be in :
bool QueryLogEntry::parse_metadata(const std::string &s)
{
...
  if (s[0] == '#' && strncmp(s.c_str(), "# administrator", strlen("# administrator")))
  {
    query.append(s);
    r= true;
  }
...
}

The above condition interprers any string that does not begins from "# administrator" as query string.