[b38]NPCs can sustain talents with level 0

[Zonk]

Playing with the talents resolver, I wanted to create a NPC that, at its lowest level, did not have a talent but could get it later on.
I used something like {base=0, every=5, max=5} - last may also have been involved but it shouldn't matter. The talent was a sustain so I used sustains_at_birth().

When I spawned that NPC at the lowest level possible, it had the sustain on - but checking the tooltip info in its sheet, the sustain was TL 0. What should have happened(in my opinion) is it simply not having the sustain.