sha1dc: update from upstream

diff --git a/sha1collisiondetection b/sha1collisiondetection
index 19d97bf5af05312267c2e874ee6bcf584d9e9681..232357eb2ea0397388254a4b188333a227bf5b10 160000 (submodule)
--- a/sha1collisiondetection
+++ b/sha1collisiondetection
@@ -1 +1 @@
-Subproject commit 19d97bf5af05312267c2e874ee6bcf584d9e9681
+Subproject commit 232357eb2ea0397388254a4b188333a227bf5b10