Alter the check

Alter the check

Alter the check since 0 md size is an error.

Signed-off-by: Jiasheng Jiang <jiasheng@purdue.edu>
Reviewed-by: Neil Horman <nhorman@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Tom Cosgrove <tom.cosgrove@arm.com>
(Merged from https://github.com/openssl/openssl/pull/23940)