From 06a2a25cb71b50b0ddac6ce0770846373455e6df Mon Sep 17 00:00:00 2001
From: Daniele Forsi IU5HKX <iu5hkx@gmail.com>
Date: Sun, 24 Aug 2025 18:52:06 +0200
Subject: [PATCH] Remove misleading duplicated error message

The correct error message has been printed by getopt_long()
before returning.

Test cases:
$ rigmem -Q
rigmem: invalid option -- 'Q'
Unknown option '?'
Usage: rigmem [OPTION]... COMMAND... FILE
...

$ rigmem --foo
rigmem: unrecognized option '--foo'
Unknown option '?'
Usage: rigmem [OPTION]... COMMAND... FILE
...
---
 tests/rigmem.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/tests/rigmem.c b/tests/rigmem.c
index 4314e1c2a..15154db0a 100644
--- a/tests/rigmem.c
+++ b/tests/rigmem.c
@@ -187,7 +187,6 @@ int main(int argc, char *argv[])
             break;
 
         default:
-            fprintf(stderr, "Unknown option '%c'\n", c);
             usage();    /* unknown option? */
             exit(1);
         }