l2cap can send data to low layer when close the classic bt.

components/bt/bluedroid/stack/l2cap/l2c_link.c

@@ -1185,7 +1185,7 @@ void l2c_link_check_send_pkts (tL2C_LCB *p_lcb, tL2C_CCB *p_ccb, BT_HDR *p_buf)
             while ((l2cb.controller_xmit_window != 0) && (p_lcb->sent_not_acked < p_lcb->link_xmit_quota))
 #endif
             {
-                L2CAP_TRACE_DEBUG("l2cu_get_next_buffer_to_send = %p",l2cu_get_next_buffer_to_send(p_lcb));
+                //L2CAP_TRACE_DEBUG("l2cu_get_next_buffer_to_send = %p",l2cu_get_next_buffer_to_send(p_lcb));
                 if ((p_buf = l2cu_get_next_buffer_to_send (p_lcb)) == NULL) {
                     break;
                 }