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sub _close { my $data = shift; ... if exists ${*$ftp}{'net_ftp_dataconn'} && $data == ${*$ftp}{'net_ftp_dataconn'};
$ perl -MNet::FTP -MNet::FTP::dataconn -le ' Net::FTP::dataconn->new-> +close ' Can't use an undefined value as a symbol reference at /usr/lib/perl5/5 +.10.0/Net/FTP/dataconn.pm line 54.