:art: YY_USER_INIT

diff --git a/ast b/ast
index 940fc44dee9ed5afa0e4226498eddb49f92a349b..440d41a1a4ecc73788ffb74ef0558ce99fda6c6f 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit 940fc44dee9ed5afa0e4226498eddb49f92a349b
+Subproject commit 440d41a1a4ecc73788ffb74ef0558ce99fda6c6f