Fix flat_list: destructor hack should only compile for types with nontrivial destructor

libs/util/include/psemek/util/flat_list.hpp

@@ -169,29 +169,31 @@ namespace psemek::util
 			first_ = null;
 			return;
 		}
-
+		else
-		if (size_ == 0)
 		{
+			if (size_ == 0)
+			{
+				nodes_.reset();
+				capacity_ = 0;
+				first_ = null;
+				return;
+			}
+
+			for (Handle h = first_; h != null;)
+			{
+				auto next = nodes_[h].next;
+				new (&nodes_[h].value) T;
+				h = next;
+			}
+
+			for (std::size_t i = 0; i < capacity_; ++i)
+				nodes_[i].value.~T();
+
 			nodes_.reset();
 			capacity_ = 0;
+			size_ = 0;
 			first_ = null;
-			return;
 		}
-
-		for (Handle h = first_; h != null;)
-		{
-			auto next = nodes_[h].next;
-			new (&nodes_[h].value) T;
-			h = next;
-		}
-
-		for (std::size_t i = 0; i < capacity_; ++i)
-			nodes_[i].value.~T();
-
-		nodes_.reset();
-		capacity_ = 0;
-		size_ = 0;
-		first_ = null;
 	}
 
 	template <typename T, typename Handle>