remove unused var from function call in CategoryTree.js
When the AJAX result returns an HTTP error, an error message is shown with a link to retry the action. However, when clicking on the link, a JS error is raised:
CategoryTree.js?4, line 122: enc is not defined
Simple fix attached.
Version: unspecified
Severity: minor
URL: http://de.wikipedia.org/w/index.php?title=Wikipedia:Verbesserungsvorschläge&oldid=57409041#Fehlermeldung_bei_Kategorien_hat_Link_ohne_Ziel
Attached: