ltj-direction.lua: Fix 'Attempt to double-free pdf_save node.'

diff --git a/src/ltj-direction.lua b/src/ltj-direction.lua
index 00fe00d..e1a7ffd 100644 (file)
--- a/src/ltj-direction.lua
+++ b/src/ltj-direction.lua
@@ -568,12 +568,12 @@ do
         local db
         local dnh = getfield(dn, 'value')
         for x in traverse(dnh) do
-           if has_attr(x, attr_dir) == new_dir then
+           if has_attr(x, attr_dir)%dir_math_mod == new_dir then
               setfield(dn, 'value', to_node(node_remove(dnh, x)))
               db=x; break
            end
         end
-        Dnode.flush_list(dnh)
+        Dnode.flush_list(getfield(dn, 'value'))
         db = db or create_dir_node(b, box_dir, new_dir, false)
         local w = getfield(b, 'width')
         local h = getfield(b, 'height')