Ruby » Ruby master

webrick: httpauth requires regular files

Be sure we do not try to open a pipe to read from, since we care
about mtime in all cases.

• lib/webrick/httpauth/htdigest.rb: use File.open
• lib/webrick/httpauth/htgroup.rb: ditto
• lib/webrick/httpauth/htpasswd.rb: ditto
  [Misc #14216]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61397 b2dd03c8-39d4-4d8f-98ff-823fe69b080e