Dir#close no longer raises an IOError if already closed
Dir#close no longer raises an IOError if already closed

kachick/rubyspec,ruby/spec,jannishuebl/rubyspec,sgarciac/spec,ruby/spec,eregon/rubyspec,wied03/rubyspec,benlovell/rubyspec,kachick/rubyspec,askl56/rubyspec,wied03/rubyspec,lucaspinto/rubyspec,eregon/rubyspec,ruby/spec,kachick/rubyspec,yous/rubyspec,kidaa/rubyspec,bl4ckdu5t/rubyspec,ruby/rubyspec,iliabylich/rubyspec,ruby/rubyspec,sgarciac/spec,nobu/rubyspec,BanzaiMan/rubyspec,iliabylich/rubyspec,askl56/rubyspec,nobu/rubyspec,BanzaiMan/rubyspec,sgarciac/spec,bl4ckdu5t/rubyspec,benlovell/rubyspec,eregon/rubyspec,jannishuebl/rubyspec,nobu/rubyspec,lucaspinto/rubyspec,yous/rubyspec,wied03/rubyspec,kidaa/rubyspec