implemented lazy loading for object_ptr and belongs_to

source/orm/sql/query_result.cpp

@@ -5,12 +5,11 @@
 
 namespace matador::sql::detail {
 
-template<>
-record *create_prototype<record>(const std::vector<object::attribute> &prototype) {
-  auto result = std::make_unique<record>();
+record create_prototype(const std::vector<object::attribute> &prototype) {
+  record rec;
   int index{0};
   for (const auto &col: prototype) {
-    result->append({
+    rec.append({
         col.name(),
         col.type(),
         col.attributes().options(),
@@ -18,7 +17,7 @@ record *create_prototype<record>(const std::vector<object::attribute> &prototype
         index++
     });
   }
-  return result.release();
+  return rec;
 }