ckeditor_link_ckeditor_link_node_url always gets the node language

Problem/Motivation

If there is a translated node to which we link, the function ckeditor_link_ckeditor_link_node_url always gets the language from the node and not the one we are visiting the page in ($langcode is a parameter)
and overrides it. Therefore we always got node links from the "first" node language which was always the same.

Proposed resolution

Check if the language is available and only if not, load the default one from the node.

Just a quick fix...