Make the option structures const.

Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
diff --git a/extensions/libipt_SAME.c b/extensions/libipt_SAME.c
index b14c501..fe4df99 100644
--- a/extensions/libipt_SAME.c
+++ b/extensions/libipt_SAME.c
@@ -29,7 +29,7 @@
 IPTABLES_VERSION);
 }
 
-static struct option opts[] = {
+static const struct option opts[] = {
 	{ "to", 1, 0, '1' },
 	{ "nodst", 0, 0, '2'},
 	{ "random", 0, 0, '3' },