patch 8.2.3680: repeated code in xxd

Problem:    Repeated code in xxd.
Solution:   Change exit_on_ferror() to getc_or_die(). (closes #9226)

src/version.c

@@ -757,6 +757,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3680,
 /**/
     3679,
 /**/