Fiddling with llist to make memory management easier.  Specifically, the
option to delete the contents of the list when we delete the list is a
good thing.
diff --git a/util-linux/mount.c b/util-linux/mount.c
index 61ceba8..4bd6433 100644
--- a/util-linux/mount.c
+++ b/util-linux/mount.c
@@ -182,7 +182,7 @@
 #if ENABLE_FEATURE_CLEAN_UP
 static void delete_block_backed_filesystems(void)
 {
-	llist_free(fslist);
+	llist_free(fslist, free);
 }
 #else
 void delete_block_backed_filesystems(void);