[mutter] tests/dbus-runner: Just forward test case exit status

[Marge Bot <marge-bot src gnome org>]

commit 02eac693df84f5b3bfe56626a550060b5943edf0
Author: Jonas Ådahl <jadahl gmail com>
Date:   Fri Aug 5 12:16:56 2022 +0200

    tests/dbus-runner: Just forward test case exit status
    
    This allows tests to skip (return 77) and properly report that to meson.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2555>

 src/tests/meta-dbus-runner.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/src/tests/meta-dbus-runner.py b/src/tests/meta-dbus-runner.py
index 79f6a07901..adb7d815cc 100755
--- a/src/tests/meta-dbus-runner.py
+++ b/src/tests/meta-dbus-runner.py
@@ -168,7 +168,7 @@ ret = (unix_fd, False)
             args = wrapper.split(' ') + args
 
         p = subprocess.Popen(args, env=env)
-        self.assertEqual(p.wait(), 0)
+        return p.wait()
 
 
 if __name__ == '__main__':
@@ -179,8 +179,10 @@ if __name__ == '__main__':
     MutterDBusTestCase.setUpClass(args.kvm)
     test_case = MutterDBusTestCase()
     test_case.assertGreater(len(rest), 1)
+    result = 1
     try:
         print('Running test case...', file=sys.stderr)
-        test_case.wrap_call(rest[1:])
+        result = test_case.wrap_call(rest[1:])
     finally:
         MutterDBusTestCase.tearDownClass()
+    sys.exit(result)