builtin/update-server-info: remove unnecessary if statement

Since we already teach the `repo_config()` in f29f199 (config:
teach repo_config to allow `repo` to be NULL, 2025-03-08) to allow
`repo` to be NULL, no need to check if `repo` is NULL before calling
`repo_config()`.

Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Usman Akinyemi <usmanakinyemi202@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: Unique-Usman

builtin/update-server-info.c

@@ -20,8 +20,8 @@ int cmd_update_server_info(int argc,
 		OPT_END()
 	};
 
-	if (repo)
-		repo_config(repo, git_default_config, NULL);
+	repo_config(repo, git_default_config, NULL);
+
 	argc = parse_options(argc, argv, prefix, options,
 			     update_server_info_usage, 0);
 	if (argc > 0)

t/t1517-outside-repo.sh

@@ -107,4 +107,11 @@ test_expect_success LIBCURL 'remote-http outside repository' '
 	test_grep "^error: remote-curl" actual
 '
 
+test_expect_success 'update-server-info does not crash with -h' '
+	test_expect_code 129 git update-server-info -h >usage &&
+	test_grep "[Uu]sage: git update-server-info " usage &&
+	test_expect_code 129 nongit git update-server-info -h >usage &&
+	test_grep "[Uu]sage: git update-server-info " usage
+'
+
 test_done