fix close packet index coding

https://github.com/warmcat/libwebsockets/issues/792

diff --git a/lib/libwebsockets.c b/lib/libwebsockets.c
index 8ee906a..bf78584 100755 (executable)
--- a/lib/libwebsockets.c
+++ b/lib/libwebsockets.c
@@ -349,7 +349,7 @@ lws_close_free_wsi(struct lws *wsi, enum lws_close_status reason)
                if (!wsi->u.ws.close_in_ping_buffer_len) {
                        wsi->u.ws.close_in_ping_buffer_len = 2;
                        wsi->u.ws.ping_payload_buf[LWS_PRE] =
-                               (reason >> 16) & 0xff;
+                               (reason >> 8) & 0xff;
                        wsi->u.ws.ping_payload_buf[LWS_PRE + 1] =
                                reason & 0xff;
                }