Adapt the rest of the source to the removal of (EVP_MD_CTX|HMAC_CTX)_cleanup

Reviewed-by: Rich Salz <rsalz@openssl.org>

ssl/s3_enc.c

@@ -518,7 +518,7 @@ int ssl3_final_finish_mac(SSL *s, const char *sender, int len, unsigned char *p)
 
     ret = EVP_MD_CTX_size(ctx);
     if (ret < 0) {
-        EVP_MD_CTX_cleanup(ctx);
+        EVP_MD_CTX_init(ctx);
         return 0;
     }