The source project of this merge request has been removed.
Fix vague linkage of Link* class vtables
Due to falling back to the implicitly inline destructors, some of the Link* classes had all their overridden methods defined inline with made the linkage of their vtables vague.
This change moves their destructors into a defined translation unit thereby anchoring their vtables in the libpoppler DSO which fixes issues using dynamic_cast when builing Poppler using Clang.
Still closing #893 (closed)