Update

diff --git a/util b/util
index c45192ded4f6f23343555665ac01d8eabcc748a4..4d21a2e26f01637b7695b12fcfc4a805432c3d15 160000 (submodule)
--- a/util
+++ b/util
@@ -1 +1 @@
-Subproject commit c45192ded4f6f23343555665ac01d8eabcc748a4
+Subproject commit 4d21a2e26f01637b7695b12fcfc4a805432c3d15