Fix test after is_callable change

Author: nikic

ext/pdo_sqlite/tests/pdo_fetch_func_001.phpt

@@ -112,7 +112,7 @@ Warning: PDOStatement::fetchAll(): SQLSTATE[HY000]: General error: no array or s
 Warning: PDOStatement::fetchAll(): SQLSTATE[HY000]: General error in %s on line %d
 bool(false)
 
-Warning: PDOStatement::fetchAll(): SQLSTATE[HY000]: General error: class PDOStatement does not have a method "foo" in %s on line %d
+Warning: PDOStatement::fetchAll(): SQLSTATE[HY000]: General error: cannot access "self" when no class scope is active in %s on line %d
 
 Warning: PDOStatement::fetchAll(): SQLSTATE[HY000]: General error in %s on line %d
 bool(false)