Changes

Summary

1. Fix crashing when trying to replace snow. (Pulled from 1.12) (details)

Commit a9f98ee055882dbcd78763ef57d5325c649bad0b by alexbegt Fix crashing when trying to replace snow. (Pulled from 1.12)
	src/main/java/com/progwml6/natura/world/worldgen/trees/overworld/OverworldTreeGenerator.java (diff)