fix r56467
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56468 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
fix r56467
RLIMIT_NOFILE.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56468 b2dd03c8-39d4-4d8f-98ff-823fe69b080e