Bug: able to summon untis of size 0

[DrAtomic1]

I went with the easy solution ('if summon <0 then summon =1 function') but jeah your solution is even more clean, where you would summon 1 unit with a limited number of health points, i.e. a damaged unit.

Anyway, solution is up to the devs... I can live with either solution as long as it isnt a zero sized unit lol.