test_gc.rb: relax criterion
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60011 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test_gc.rb: relax criterion
criterion and compare by epsilon.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60011 b2dd03c8-39d4-4d8f-98ff-823fe69b080e