Fix test error

lib/api/helpers.rb

@@ -92,7 +92,7 @@ module API
     def find_project_snippet(id)
       finder_params = { filter: :by_project, project: user_project }
-      SnippetsFinder.new.execute(current_user, finder_params).find(id)
+      SnippetsFinder.new(current_user, finder_params).execute.find(id)
     end
     def find_merge_request_with_access(iid, access_level = :read_merge_request)