Call lava doesn't use all locations

[Jochen Terstiege]

It seems that if you repeatedly cast the “call lava”, not all locations start to fill up with lava. IMHO the map should fill up with more lava the more often you use the spell.

You can test this in our test area. The screenshot shows the result after the first “call lava” spell. Casting it repeatedly after this doesn’t change anything.