Spamassassin - uninitialized value in Bayes.pm

[Troy]

Recently I have been seeing the following in my maillog as it relates to
spamassassin running.  It appears the filter is running, but would like
to know what these errors mean. Any ideas?

-Troy


Dec  5 06:11:07 localhost spamd[18901]: Use of uninitialized value at
/usr/local/lib/perl5/site_perl/5.005/Mail/SpamAssassin/Bayes.pm line
515.
Dec  5 06:11:07 localhost spamd[18901]: Use of uninitialized value at
/usr/local/lib/perl5/site_perl/5.005/Mail/SpamAssassin/Bayes.pm line
515.
Dec  5 06:11:07 localhost spamd[18901]: Use of uninitialized value at
/usr/local/lib/perl5/site_perl/5.005/Mail/SpamAssassin/Bayes.pm line
517.
Dec  5 06:11:07 localhost spamd[18901]: Use of uninitialized value at
/usr/local/lib/perl5/site_perl/5.005/Mail/SpamAssassin/Bayes.pm line
517.
Dec  5 06:11:07 localhost spamd[18901]: Use of uninitialized value at
/usr/local/lib/perl5/site_perl/5.005/Mail/SpamAssassin/Bayes.pm line
518.
Dec  5 06:11:07 localhost spamd[18901]: Use of uninitialized value at
/usr/local/lib/perl5/site_perl/5.005/Mail/SpamAssassin/Bayes.pm line
518.

The lines in bayes.pm appear to be:

    $boundary =~ s/[a-fA-F0-9]/H/gs;
    # break up blocks of separator chars so they become their own tokens
    $boundary =~ s/([-_\.=]+)/ $1 /gs;
    $val .= $boundary;