[A16] Stack Trace when Builder tries Haul Item off Blueprint Surrounded by Fire

[maarx1337]

Application throws stack trace error (10 jobs in 10 ticks) when Builder tries to Haul an obstructing Item off from atop an unrelated Blueprint but that Blueprint/Item is surrounded by Fire and cannot be reached.

Steps to Replicate:

1. DevTool Lightning Strike a square for 3x3 Fire.
2. DevTool Destroy the center square to clear Fire.
3. DevTool Spawn some Steel on the center square.
4. Place Blueprint for Wooden Wall on the center square.
5. Observe all unoccupied Builders start spamming stack trace errors (10 jobs in 10 ticks) for Hauling Steel.

[ison]

I'll take a look

[ison]

Fixed, thanks.