crypto: authencesn - fix weird comma-terminated line

Fix a weird case where a line was terminated by a comma rather than a
semicolon, causing the statement to be continued on the next line.
Fortunately the code still behaved as intended, though.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>