std/crypto: don't constrain Gimli hash output to a fixed length
As documented in the comment right above the finalization function,
Gimli can be used as a XOF, i.e. the output doesn't have a fixed
length.
So, allow it to be used that way, just like BLAKE3.
e7b60b219bFrank Denis committed on 11/5/2020, 10:21:19 PM· committed by Andrew Kelleyparent2e354c3