Fix even more possibly not zero-terminated strings after copy (Karsten Desler)
diff --git a/extensions/libipt_helper.c b/extensions/libipt_helper.c
index 4b16e02..72660d9 100644
--- a/extensions/libipt_helper.c
+++ b/extensions/libipt_helper.c
@@ -46,6 +46,7 @@
 	case '1':
 		check_inverse(optarg, &invert, &invert, 0);
 		strncpy(info->name, optarg, 29);
+		info->name[29] = '\0';
 		if (invert)
 			info->invert = 1;
 		*flags = 1;