Use zval_ptr_dtor_nogc() instead of zval_dtor() inplaces where circular-references are not possible

Author: dstogov

ibase_query.c

@@ -1628,7 +1628,7 @@ static void _php_ibase_fetch_hash(INTERNAL_FUNCTION_PARAMETERS, int fetch_type)
 					}
 					break;
 				_php_ibase_fetch_error:
-					zval_dtor(&result);
+					zval_ptr_dtor_nogc(&result);
 					RETURN_FALSE;
 			} /* switch */
 

php_ibase_udf.c

@@ -298,7 +298,7 @@ static void call_php(char *name, PARAMDSC *r, int argc, PARAMDSC **argv)
 				case dtype_sql_date:
 				case dtype_sql_time:
 				case dtype_timestamp:
-					zval_dtor(&args[i]);
+					zval_ptr_dtor_nogc(&args[i]);
 			}
 		}