Bump year in copyrights.
diff --git a/src/option.c b/src/option.c
index 064ef62..78ad81e 100644
--- a/src/option.c
+++ b/src/option.c
@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2016 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2017 Simon Kelley
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by