Fix preload with nested associations

When the middle association doesn't have any records and the inner
association is not an empty scope the owner will be `nil` so we can't
try to reset the inverse association.

1 files changed, 2 insertions, 0 deletions

diff --git a/activerecord/test/models/author.rb b/activerecord/test/models/author.rb
index 8b5a2fa0c8..3eb8a3a0fa 100644
--- a/activerecord/test/models/author.rb
+++ b/activerecord/test/models/author.rb
@@ -217,6 +217,8 @@ class AuthorAddress < ActiveRecord::Base
 end
 
 class AuthorFavorite < ActiveRecord::Base
+  default_scope { order(id: :asc) }
+
   belongs_to :author
   belongs_to :favorite_author, class_name: "Author"
 end