Changes

Summary

1. Fix #463 Unable to transfer recipes that have a null ingredient (commit: 79579d1) (details)

Commit 79579d13bcdcdc5fe355f57987fafa031a2e62d0 by mezz Fix #463 Unable to transfer recipes that have a null ingredient (commit: 79579d1)
	src/main/java/mezz/jei/api/gui/IGuiIngredient.java (diff)
	src/main/java/mezz/jei/util/StackHelper.java (diff)