#define expect(unit, pattern, expected) \
{ \
char *e; \
- _cleanup_free_ char *t; \
+ _cleanup_free_ char *t = NULL; \
assert_se(unit_full_printf(unit, pattern, &t) >= 0); \
printf("result: %s\nexpect: %s\n", t, expected); \
if ((e = endswith(expected, "*"))) \