* ext/socket: Avoid redundant fcntl/fstat syscalls for cloexec
  sockets.
  Patch by Eric Wong.  [ruby-core:59429] [Feature #9330]



git-svn-id: svn+ssh://svn.ruby-lang.org/ruby/trunk@44728 b2dd03c8-39d4-4d8f-98ff-823fe69b080e