inline (,)/2 properly

diff --git a/src/prolog/parser b/src/prolog/parser
index 2dfd48a1ef8e63de74798d131920a25bc2fe6c8b..61f1b22ddd58b1d4b261fc0a35a2eba4404912b6 160000 (submodule)
--- a/src/prolog/parser
+++ b/src/prolog/parser
@@ -1 +1 @@
-Subproject commit 2dfd48a1ef8e63de74798d131920a25bc2fe6c8b
+Subproject commit 61f1b22ddd58b1d4b261fc0a35a2eba4404912b6