Ruby

webrick: handle EAGAIN/EWOULDBLOCK on proxy connections

• lib/webrick/httpproxy.rb (do_CONNECT): high-level IO methods
  [ruby-core:82861] [Bug #12130]
  Patch by: Keisuke NISHI

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59965 b2dd03c8-39d4-4d8f-98ff-823fe69b080e