* lib/webrick/httprequest.rb (setup_forwarded_info): Use the first
  value in X-Forwarded-Proto, if header contains multiple comma
  separated values.  Some middlewares may add these values to the
  list, not replacing.  [Fix GH-1386]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55484 b2dd03c8-39d4-4d8f-98ff-823fe69b080e