Fix extensions registering
Fix extensions registering

Not making a copy of the list resulted in updating
the ENTRY_POINT_CACHE which is not what we want.

fernandog/subliminal,h3llrais3r/subliminal,ofir123/subliminal,Diaoul/subliminal,SickRage/subliminal,hpsbranco/subliminal,juanmhidalgo/subliminal,neo1691/subliminal,Elettronik/subliminal