Error: Call to undefined function clone_access() when using views link

You forgot to update your views integration code when you renamed your access callback function.

Line 25 of views_handler_field_node_link_clone.inc still reads:

if (!clone_access($node)) {

Should be:

if (!clone_access_cloning($node)) {

Current code results in an error if you try to add the link field to a view:

"Call to undefined function clone_access()"