userspace: remove vestigial '?' cases from top-level getopt(3) loops

getopt(3) returns '?' when it encounters a flag not present in the in
the optstring or if a flag is missing its option argument.  We can
handle this case with the "default" failure case with no loss of
legibility.  Hence, remove all the redundant "case '?':" lines.

Prompted by dlg@.  With help from dlg@ and millert@.

Link: https://marc.info/?l=openbsd-tech&m=167011979726449&w=2

ok naddy@ millert@ dlg@

1 files changed, 0 insertions, 1 deletions

diff --git a/usr.sbin/ac/ac.c b/usr.sbin/ac/ac.c
index ed4f7ebefd8..e39b316ebba 100644
--- a/usr.sbin/ac/ac.c
+++ b/usr.sbin/ac/ac.c
@@ -223,7 +223,6 @@ main(int argc, char *argv[])
 		case 'w':
 			fp = file(optarg);
 			break;
-		case '?':
 		default:
 			usage();
 			break;