--- \dll\postgresql-12.0\a\backend\commands\lockcmds.c	Mon Sep 30 17:06:55 2019
+++ lockcmds.c	Fri Nov 22 18:45:01 2019
@@ -285,7 +285,7 @@
 
 	LockViewRecurse_walker((Node *) viewquery, &context);
 
-	ancestor_views = list_delete_oid(ancestor_views, reloid);
+	list_delete_oid(ancestor_views, reloid);
 
 	table_close(view, NoLock);
 }