Changes

Summary

1. Fix crash from invalid canFill/Drain calls. #1042 (details)

Commit 6ca11c5dbff5dcf82b543f02c5423033ee46f3fe by bernhard.bonigl Fix crash from invalid canFill/Drain calls. #1042
	src/main/java/tconstruct/smeltery/logic/CastingBlockLogic.java (diff)