crypto: fix build without scrypt
- add missing semicolon to fix:
In file included from ../src/node_crypto.h:47,
from ../src/node.cc:46:
../src/crypto/crypto_scrypt.h:80:2: error: expected ';' after struct definition
80 | }
| ^
| ;
and fix typo in the comment
Signed-off-by: Martin Jansa martin.jansa@lge.com