Update ucl submodule.

diff --git a/src/ucl b/src/ucl
index 57d333d313d36e938bb24936946f7e9ab3d62c9d..006dd46060d6aa44191a3e404b975ba93bfb9b99 160000 (submodule)
--- a/src/ucl
+++ b/src/ucl
@@ -1 +1 @@
-Subproject commit 57d333d313d36e938bb24936946f7e9ab3d62c9d
+Subproject commit 006dd46060d6aa44191a3e404b975ba93bfb9b99