fix error discrepancy

ssl/s3_srvr.c

diff --git a/ssl/s3_srvr.c b/ssl/s3_srvr.c
index 74af5dc..8600d06 100644
--- a/ssl/s3_srvr.c
+++ b/ssl/s3_srvr.c
@@ -2984,7 +2984,7 @@
 			md = tls12_get_hash(p[0]);
 			if (md == NULL)
 				{
-				SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
+				SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_UNKNOWN_DIGEST);
 				al=SSL_AD_DECODE_ERROR;
 				goto f_err;
 				}