Polish: document unix_group helper

diff --git a/helpers/external_acl/unix_group/check_group.cc b/helpers/external_acl/unix_group/check_group.cc
index 769750cce2b43b104cea85d08a519233309be53c..4c9508e1e10473e235f983cb36f6459d471c124a 100644 (file)
--- a/helpers/external_acl/unix_group/check_group.cc
+++ b/helpers/external_acl/unix_group/check_group.cc
@@ -175,6 +175,7 @@ main(int argc, char *argv[])
             } else {
                 fprintf(stderr, "Unknown option character `\\x%x'.\n", optopt);
             }
+            // fall through to display help texts.
 
         default:
             usage(argv[0]);