Removed mistaken setting of NGX_SSL_BUFFERED flag in ngx_ssl_send_chain()
if SSL buffer is not used.

src/event/ngx_event_openssl.c

diff --git a/src/event/ngx_event_openssl.c b/src/event/ngx_event_openssl.c
index 7903eb6..30e588c 100644
--- a/src/event/ngx_event_openssl.c
+++ b/src/event/ngx_event_openssl.c
@@ -990,7 +990,6 @@
             }
 
             if (n == NGX_AGAIN) {
-                c->buffered |= NGX_SSL_BUFFERED;
                 return in;
             }