[Web-ftp] bugfix for 2.1.0

[Anthony R. J. B. <an...@su...>]

  I made a bad, and recursive download tar files won't
work with WinZip... either download
http://www.suave.net/Web-FTP/Web-FTP-2.1.1.tar.gz

or add

$sz = 0; 
at line 501 like so

            if($type eq 'd') {
              next if $fn eq '..' || $fn eq '.';
              $download_size += 512;
              $tp = 5;
              $sz = 0;
              push @Dirs, $name;


sorry for the mishap... works good now... 

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