* lib/webrick/httpresponse.rb (WEBrick::HTTPResponse#set_error):
	  Fix for possible cross-site scripting (CVE-2010-0541). 
	  Found by Apple, reported by Hideki Yamane.
	  Patch by Hirokazu Nishio <nishio.hirokazu AT gmail.com>.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_7@29002 b2dd03c8-39d4-4d8f-98ff-823fe69b080e