tests: Avoid auto-removal when test fails.
* tests/gpgscm/init.scm (*exit-status*): New. (exit): Set *exit-status*. * tests/gpgscm/tests.scm (mkdtemp-autoremove): Check exit-status and only remove the directory if not zero.
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>