Update spec/datadog/di/code_tracker_spec.rb

Co-authored-by: Sergey Fedorov <oni.strech@gmail.com>

spec/datadog/di/code_tracker_spec.rb

@@ -25,7 +25,7 @@
       # Should still be empty here.
       expect(tracker.send(:registry)).to be_empty
       load File.join(File.dirname(__FILE__), "code_tracker_test_class_1.rb")
-      expect(tracker.send(:registry).each.to_a.length).to eq(1)
+      expect(tracker.send(:registry).length).to eq(1)
 
       path = tracker.send(:registry).each.to_a.first.first
       # The path in the registry should be absolute.