During the conversion of uno services a few lines where removed that
probably should not have been removed. This caused the dialog editor
to crash if you tried to add a new language resource to a document
fdo#93077. The fix for that bug fixed the crash but also made it
imposible to add a language resource to a dialog that isn't previously
translated.

With this patch the functionality should be back on track, adding/removing
language resources without problems at least as far as my testing goes.

Change-Id: Ie6e083837894a219bf8e9c75dec6bf7652d51615
Reviewed-on: https://gerrit.libreoffice.org/30462Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>
Tested-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>