[vala/staging] tests: Avoid causing unrelated errors in invalid test cases

[Rico Tzschichholz <ricotz src gnome org>]

commit ac4fcffdc3c304c8d20208e06ee8b252869773fb
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sun Oct 17 09:15:58 2021 +0200

    tests: Avoid causing unrelated errors in invalid test cases

 tests/chainup/base-struct-invalid.test | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/tests/chainup/base-struct-invalid.test b/tests/chainup/base-struct-invalid.test
index 5b2fb2693..b711a03e0 100644
--- a/tests/chainup/base-struct-invalid.test
+++ b/tests/chainup/base-struct-invalid.test
@@ -1,6 +1,8 @@
 Invalid Code
 
 struct Foo {
+       public int i;
+
        public Foo () {
                base ();
        }