gc.c: use ccan/list
This seems to improve the readability of gc.c a small amount and it doesn't have any measurable performance impact.
[ruby-core:87067] [Misc #14762]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63447 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
gc.c: use ccan/list
This seems to improve the readability of gc.c a small amount
and it doesn't have any measurable performance impact.
[ruby-core:87067] [Misc #14762]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63447 b2dd03c8-39d4-4d8f-98ff-823fe69b080e