Fix association not skipping properly

Author: zaucy

ecsact/entt/runtime.hh

@@ -772,6 +772,7 @@ namespace ecsact::entt {
 			const void* action_data = nullptr;
 			auto itr_view = [&] {
 				for(auto entity : view) {
+					bool missing_assoc_entities = false;
 					mp_for_each<mp_iota_c<mp_size<associations>::value>>([&](auto I) {
 						using boost::mp11::mp_at;
 						using boost::mp11::mp_size_t;
@@ -799,18 +800,22 @@ namespace ecsact::entt {
 							}
 						}
 
-						assert(found_associated_entity);
+						if(!found_associated_entity) {
+							missing_assoc_entities = true;
+						}
 					});
 
-					_execute_system_user_itr<SystemT, ChildSystemsListT>(
-						info,
-						view,
-						assoc_views,
-						entity,
-						parent,
-						action_data,
-						actions
-					);
+					if(!missing_assoc_entities) {
+						_execute_system_user_itr<SystemT, ChildSystemsListT>(
+							info,
+							view,
+							assoc_views,
+							entity,
+							parent,
+							action_data,
+							actions
+						);
+					}
 				}
 			};