Avoid "Object variable not set" Basic runtime error
on line
Set oLibraries = oComp.DialogLibraries
when pvArgs(0) is a XComponent object
Change-Id: Id35a492905c47d81ef02d433c98d83b4c81eafeb
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/105921
Tested-by: Jean-Pierre Ledure <jp@ledure.be>
Reviewed-by: Jean-Pierre Ledure <jp@ledure.be>