ext/spl: Use new F ZPP modifier

Author: Girgias

ext/spl/spl_iterators.c

@@ -1436,15 +1436,9 @@ static spl_dual_it_object* spl_dual_it_construct(INTERNAL_FUNCTION_PARAMETERS, z
 		case DIT_CallbackFilterIterator:
 		case DIT_RecursiveCallbackFilterIterator: {
 			zend_fcall_info fci;
-			if (zend_parse_parameters(ZEND_NUM_ARGS(), "Of", &zobject, ce_inner, &fci, &intern->u.callback_filter) == FAILURE) {
+			if (zend_parse_parameters(ZEND_NUM_ARGS(), "OF", &zobject, ce_inner, &fci, &intern->u.callback_filter) == FAILURE) {
 				return NULL;
 			}
-			if (!ZEND_FCC_INITIALIZED(intern->u.callback_filter)) {
-				/* Call trampoline has been cleared by zpp. Refetch it, because we want to deal
-				 * with it outselves. It is important that it is not refetched on every call,
-				 * because calls may occur from different scopes. */
-				zend_is_callable_ex(&fci.function_name, NULL, IS_CALLABLE_SUPPRESS_DEPRECATIONS, NULL, &intern->u.callback_filter, NULL);
-			}
 			zend_fcc_addref(&intern->u.callback_filter);
 			break;
 		}