Add a linked list constructor initializing from an enumerator

src/libstrongswan/utils/linked_list.c

@@ -572,3 +572,22 @@ linked_list_t *linked_list_create()
 
 	return &this->public;
 }
+
+/*
+ * See header.
+ */
+linked_list_t *linked_list_create_from_enumerator(enumerator_t *enumerator)
+{
+	linked_list_t *list;
+	void *item;
+
+	list = linked_list_create();
+
+	while (enumerator->enumerate(enumerator, &item))
+	{
+		list->insert_last(list, item);
+	}
+	enumerator->destroy(enumerator);
+
+	return list;
+}