Replace htobe64 with htonll

We don't have a compatability function to fill in a missing htobe64; but
we already have one for the identical htonll.

Change-Id: Ic0a95db1c5b0041e14e6b127432fb533b97e4cac

res/res_http_websocket.c

@@ -244,7 +244,7 @@ int AST_OPTIONAL_API_NAME(ast_websocket_write)(struct ast_websocket *session, en
 	if (length == 126) {
 		put_unaligned_uint16(&frame[2], htons(actual_length));
 	} else if (length == 127) {
-		put_unaligned_uint64(&frame[2], htobe64(actual_length));
+		put_unaligned_uint64(&frame[2], htonll(actual_length));
 	}
 
 	ao2_lock(session);