libtiff: Avoids a warning regarding fallthrough.

From 6c403411168615a3f96d34594b4ceacc90b02b12 Mon Sep 17 00:00:00 2001
From: Lee Howard <[EMAIL REDACTED]>
Date: Wed, 20 Mar 2024 11:20:23 -0700
Subject: [PATCH] Avoids a warning regarding fallthrough.

---
 tools/tiffgt.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/tiffgt.c b/tools/tiffgt.c
index bd7f45af..46d03964 100644
--- a/tools/tiffgt.c
+++ b/tools/tiffgt.c
@@ -139,9 +139,11 @@ int main(int argc, char *argv[])
             case 'h':
                 usage(EXIT_SUCCESS);
                 /*NOTREACHED*/
+                break;
             case '?':
                 usage(EXIT_FAILURE);
                 /*NOTREACHED*/
+                break;
         }
     filenum = argc - optind;
     if (filenum < 1)