Fix sparse warnings: non-ANSI function declarations, 0 used as pointer
diff --git a/extensions/libip6t_hl.c b/extensions/libip6t_hl.c
index 20aff60..e4d2ffe 100644
--- a/extensions/libip6t_hl.c
+++ b/extensions/libip6t_hl.c
@@ -121,11 +121,11 @@
 }
 
 static const struct option opts[] = {
-	{ .name = "hl",    .has_arg = 1, .flag = 0, .val = '2' },
-	{ .name = "hl-eq", .has_arg = 1, .flag = 0, .val = '2' },
-	{ .name = "hl-lt", .has_arg = 1, .flag = 0, .val = '3' },
-	{ .name = "hl-gt", .has_arg = 1, .flag = 0, .val = '4' },
-	{ 0 }
+	{ .name = "hl",    .has_arg = 1, .val = '2' },
+	{ .name = "hl-eq", .has_arg = 1, .val = '2' },
+	{ .name = "hl-lt", .has_arg = 1, .val = '3' },
+	{ .name = "hl-gt", .has_arg = 1, .val = '4' },
+	{ }
 };
 
 static