Fix outgoing telnet expension

This is what was breaking uploads via telnet.  Not only was it sending
the unexpanded buffer, it was also sending the length of the expanded
buffer out of it (wandering into gibberish or at worst, outside of the
buffer).

src/syncterm/conn.c

@@ -326,8 +326,9 @@ int conn_send(const void *vbuffer, size_t buflen, unsigned int timeout)
 
 	pthread_mutex_lock(&(conn_outbuf.mutex));
 	found=conn_buf_wait_free(&conn_outbuf, obuflen, timeout);
-	if(found)
-		found=conn_buf_put(&conn_outbuf, buffer, found);
+	if(found) {
+		found=conn_buf_put(&conn_outbuf, expanded, found);
+	}
 	pthread_mutex_unlock(&(conn_outbuf.mutex));
 
 	if (conn_api.tx_parse_cb != NULL) {