packagekit: Filter out invalid bug URLs earlier
packagekit: Filter out invalid bug URLs earlier

Do that already when receiving them in the PackageKit signal handler
(like we do for CVE URLs), not only when displaying them. This avoids
wrong bug fix counts when looking at the list length.

cockpituous/cockpit,andreasn/cockpit,andreasn/cockpit,stefwalter/cockpit,martinpitt/cockpit,garrett/cockpit,petervo/cockpit,moraleslazaro/cockpit,cockpituous/cockpit,mareklibra/cockpit,deryni/cockpit,stefwalter/cockpit,cockpituous/cockpit,mareklibra/cockpit,andreasn/cockpit,SotolitoLabs/cockpit,cockpit-project/cockpit,deryni/cockpit,cockpit-project/cockpit,moraleslazaro/cockpit,petervo/cockpit,moraleslazaro/cockpit,mareklibra/cockpit,moraleslazaro/cockpit,stefwalter/cockpit,cockpituous/cockpit,mareklibra/cockpit,SotolitoLabs/cockpit,cockpit-project/cockpit,mareklibra/cockpit,martinpitt/cockpit,garrett/cockpit,andreasn/cockpit,cockpituous/cockpit,mareklibra/cockpit,petervo/cockpit,deryni/cockpit,deryni/cockpit,cockpit-project/cockpit,stefwalter/cockpit,SotolitoLabs/cockpit,mvollmer/cockpit,stefwalter/cockpit,stefwalter/cockpit,martinpitt/cockpit,petervo/cockpit,petervo/cockpit,andreasn/cockpit,deryni/cockpit,martinpitt/cockpit,stefwalter/cockpit,moraleslazaro/cockpit,deryni/cockpit,petervo/cockpit,mvollmer/cockpit,garrett/cockpit,mareklibra/cockpit,mvollmer/cockpit,andreasn/cockpit,SotolitoLabs/cockpit,martinpitt/cockpit,moraleslazaro/cockpit,mvollmer/cockpit,moraleslazaro/cockpit,garrett/cockpit,garrett/cockpit,cockpit-project/cockpit,deryni/cockpit,SotolitoLabs/cockpit,cockpituous/cockpit,SotolitoLabs/cockpit,SotolitoLabs/cockpit,petervo/cockpit,mvollmer/cockpit,andreasn/cockpit