Use #gets instead of recv(2014) for FTP specs
Use #gets instead of recv(2014) for FTP specs

* See https://github.com/ruby/ruby/commit/ba536e41
  and https://bugs.ruby-lang.org/issues/10915
* Might solve the EBADF errors we get on Darwin which seem due to SO_OOBINLINE.

nobu/rubyspec,ruby/rubyspec,nobu/rubyspec,ruby/spec,nobu/rubyspec,ruby/spec,eregon/rubyspec,ruby/rubyspec,eregon/rubyspec,ruby/spec,eregon/rubyspec