[vala/staging] tests: Add XFAIL tests if undefined behavior sanitizer is enabled

[Rico Tzschichholz <ricotz src gnome org>]

commit de1682099945edfd8d23958cf45186aecbd0015e
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Mon Jan 3 16:51:31 2022 +0100

    tests: Add XFAIL tests if undefined behavior sanitizer is enabled
    
    In addition to d3bfaa4ae34c0e6c7a7a9d124e6c3a276c545391

 tests/Makefile.am | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/tests/Makefile.am b/tests/Makefile.am
index eccdd9222..2b4cb2ba4 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -1378,6 +1378,12 @@ XFAIL_TESTS = \
        $(NULL)
 endif
 
+if ENABLE_TEST_UBSAN
+XFAIL_TESTS = \
+       methods/extern.vala \
+       $(NULL)
+endif
+
 EXTRA_DIST = \
        glib/tests-extra-environment.sh \
        girwriter/tests-extra-environment.sh \