Don't skip NULL attr spec in declaration_specs.
@@ -4334,7 +4334,7 @@ DA (declaration_specs) {
prev_type_spec = r;
} else if ((r = TRY_A (type_spec, prev_type_spec)) != err_node) {
prev_type_spec = r;
- } else if ((r = try_attr_spec (c2m_ctx, spec_pos)) != err_node) {
+ } else if ((r = try_attr_spec (c2m_ctx, spec_pos)) != err_node && r != NULL) {
continue;
} else
break;
