appveyor: remove cache

[platform/upstream/libwebsockets.git] / plugins / protocol_lws_meta.c

diff --git a/plugins/protocol_lws_meta.c b/plugins/protocol_lws_meta.c
index f20b933..6a8eb16 100644 (file)
--- a/plugins/protocol_lws_meta.c
+++ b/plugins/protocol_lws_meta.c
@@ -529,7 +529,8 @@ callback_lws_meta(struct lws *wsi, enum lws_callback_reasons reason,
                        *p++ = LWS_META_CMD_CLOSE_NOTIFY;
                        *p++ = LWS_META_TRANSPORT_OFFSET +
                                        lws_get_channel_id(pas->wsi);
-                       *p++ = pas->len - 2 + LWS_META_TRANSPORT_OFFSET;
+                       *p++ = (unsigned char)pas->len +
+                                       LWS_META_TRANSPORT_OFFSET - 2;
                        *p++ = *bin++;
                        *p++ = *bin++;
                        for (n = 0; n < (int)pas->len - 2; n++)