Fix buffer

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@7534 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/lib/action_controller/cgi_ext/cookie.rb

@@ -80,6 +80,7 @@ class CGI #:nodoc:
       buf << '; expires=' << CGI::rfc1123_date(@expires) if @expires
       buf << '; secure' if @secure
       buf << '; HttpOnly' if @http_only
+      buf
     end
 
     # Parse a raw cookie string into a hash of cookie-name=>Cookie