From ac55db508afeb2be7fa66bb173be50785cafcea8 Mon Sep 17 00:00:00 2001
From: Oliver Hartkopp <socketcan@hartkopp.net>
Date: Wed, 29 Apr 2020 09:55:28 +0200
Subject: [PATCH] cansniffer: exit after displaying help text

Do not start the application when the user wants to read the help text.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
---
 cansniffer.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cansniffer.c b/cansniffer.c
index f6206c0..b907b5f 100644
--- a/cansniffer.c
+++ b/cansniffer.c
@@ -298,6 +298,8 @@ int main(int argc, char **argv)
 			break;
 
 		case '?':
+			print_usage(basename(argv[0]));
+			exit(0);
 			break;
 
 		default: