reuse the same frame so we don't need a singleton hash

We just want to augment the scope level, not the frame itself, so just
copy the frame to the new scope object.

1 files changed, 1 insertions, 2 deletions

diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb
index 9b52598648..4606cc3db2 100644
--- a/actionpack/lib/action_dispatch/routing/mapper.rb
+++ b/actionpack/lib/action_dispatch/routing/mapper.rb
@@ -1974,9 +1974,8 @@ module ActionDispatch
           self.class.new hash, self, scope_level
         end
 
-        EMPTY_HASH = {}.freeze
         def new_level(level)
-          self.class.new(EMPTY_HASH, self, level)
+          self.class.new(frame, self, level)
         end
 
         def [](key)