ccan commit 6aaca17e07588997417a73fac19dcf0ff17ed81b
("list: suppress unused argument warnings")
by Cody P Shafer.

Signed-off-by: Cody P Schafer <dev@codyps.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51776 b2dd03c8-39d4-4d8f-98ff-823fe69b080e