update submodule pointer

diff --git a/compiler/hetmet b/compiler/hetmet
index a663de9..8064e50 160000 (submodule)
--- a/compiler/hetmet
+++ b/compiler/hetmet
@@ -1 +1 @@
-Subproject commit a663de9a349ffe83a6c4fc10f1259f2fa6a915ed
+Subproject commit 8064e50e47f40228631f8a96ba28cbfb570c76ff