if no error code and -brief selected print out connection closed instead of read error

apps/s_client.c

@@ -1912,6 +1912,9 @@ printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240
 				break;
 			case SSL_ERROR_SYSCALL:
 				ret=get_last_socket_error();
+				if (ret == 0 && c_brief)
+					BIO_puts(bio_err, "CONNECTION CLOSED BY SERVER\n");
+				else
 					BIO_printf(bio_err,"read:errno=%d\n",ret);
 				goto shut;
 			case SSL_ERROR_ZERO_RETURN: