Fix memory leak due to circular reference
Fix memory leak due to circular reference

ajolma/perlweb,Abigail/perlweb,bjakubski/perlweb,briandfoy/perlweb,Abigail/perlweb,autarch/perlweb,bjakubski/perlweb,PeterMartini/perlweb,dagolden/perlweb,dagolden/perlweb,PeterMartini/perlweb,autarch/perlweb,ajolma/perlweb,Abigail/perlweb,alcy/perlweb,PeterMartini/perlweb,autarch/perlweb,briandfoy/perlweb,briandfoy/perlweb,bjakubski/perlweb,ajolma/perlweb,alcy/perlweb,alcy/perlweb,dagolden/perlweb