We pass no message, so use ck_assert instead of ck_assert_msg. This
results in an error with check 0.15:
tests/strutil.c:157:2: error: too few arguments to function '_ck_assert_failed'
157 | ck_assert_msg(saved_locale != NULL);
fprintf(stderr, "Old locale = %s\n", old_locale);
/* Copy the name so it won’t be clobbered by setlocale. */
saved_locale = g_strdup(old_locale);
- ck_assert_msg(saved_locale != NULL);
+ ck_assert(saved_locale != NULL);
#ifdef _WIN32
/*