Fix offense detected by Rubocop
Fix offense detected by Rubocop

Signed-off-by: Jean-Pierre Matsumoto <30b9746ac4ca429e4fb473e2e72453ba708c773e@gmail.com>

chef-cookbooks/squid,snkutlu/squid,jpmat296/squid,opscode-cookbooks/squid,opscode-cookbooks/squid,jpmat296/squid,chef-cookbooks/squid,snkutlu/squid