2 files changed, 3 insertions, 7 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/flash.rb b/actionpack/lib/action_dispatch/middleware/flash.rb
index 06038af571..80703940ed 100644
--- a/actionpack/lib/action_dispatch/middleware/flash.rb
+++ b/actionpack/lib/action_dispatch/middleware/flash.rb
@@ -133,7 +133,7 @@ module ActionDispatch
       def to_session_value #:nodoc:
         flashes_to_keep = @flashes.except(*@discard)
         return nil if flashes_to_keep.empty?
-        {'flashes' => flashes_to_keep}
+        { 'discard' => [], 'flashes' => flashes_to_keep }
       end
 
       def initialize(flashes = {}, discard = []) #:nodoc:
diff --git a/actionpack/lib/action_dispatch/middleware/static.rb b/actionpack/lib/action_dispatch/middleware/static.rb
index 41c220236a..2c5721dc22 100644
--- a/actionpack/lib/action_dispatch/middleware/static.rb
+++ b/actionpack/lib/action_dispatch/middleware/static.rb
@@ -27,8 +27,8 @@ module ActionDispatch
     # in the server's `public/` directory (see Static#call).
     def match?(path)
       path = ::Rack::Utils.unescape_path path
-      return false unless valid_path?(path)
-      path = Rack::Utils.clean_path_info path
+      return false unless ::Rack::Utils.valid_path? path
+      path = ::Rack::Utils.clean_path_info path
 
       paths = [path, "#{path}#{ext}", "#{path}/#{@index}#{ext}"]
 
@@ -94,10 +94,6 @@ module ActionDispatch
           false
         end
       end
-
-      def valid_path?(path)
-        path.valid_encoding? && !path.include?("\0")
-      end
   end
 
   # This middleware will attempt to return the contents of a file's body from