gc.c: FL_CHECK2
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59135 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
gc.c: FL_CHECK2
consitent.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59135 b2dd03c8-39d4-4d8f-98ff-823fe69b080e