Prevent extra `sync_with_transaction_state`

`sync_with_transaction_state` in `to_key` is unneeded because `id` also
does.

1 files changed, 2 insertions, 5 deletions

diff --git a/activerecord/lib/active_record/attribute_methods/primary_key.rb b/activerecord/lib/active_record/attribute_methods/primary_key.rb
index b5fd0cb370..b9b2acff37 100644
--- a/activerecord/lib/active_record/attribute_methods/primary_key.rb
+++ b/activerecord/lib/active_record/attribute_methods/primary_key.rb
@@ -8,17 +8,14 @@ module ActiveRecord
       # Returns this record's primary key value wrapped in an array if one is
       # available.
       def to_key
-        sync_with_transaction_state
         key = id
         [key] if key
       end
 
       # Returns the primary key value.
       def id
-        if pk = self.class.primary_key
-          sync_with_transaction_state
-          _read_attribute(pk)
-        end
+        sync_with_transaction_state
+        _read_attribute(self.class.primary_key) if self.class.primary_key
       end
 
       # Sets the primary key value.