MGOS_BT_GATTC_EV_DISCONNECT is called twice if connecting to offline MAC

[zdila]

Log EH:DISCONNECT is from MGOS_BT_GATTC_EV_DISCONNECT handler (disconnect_ev_handler):

[Feb 27 11:01:48.452] esp32_bt_gatts.c:860    DISCONNECT cid 0 addr 80:7d:3a:80:0c:12
[Feb 27 11:01:48.458] esp32_bt_gattc.c:153    OPEN if 3 cid 0 addr 80:7d:3a:80:0c:12 st 0x85 mtu 0
[Feb 27 11:01:48.465] master.c:57             EH:DISCONNECT
[Feb 27 11:01:48.468] master.c:57             EH:DISCONNECT

Code for connecting:

  mgos_event_add_handler(MGOS_BT_GATTC_EV_CONNECT, connect_ev_handler, NULL);
  mgos_event_add_handler(MGOS_BT_GATTC_EV_DISCONNECT, disconnect_ev_handler, NULL);

  struct mgos_bt_addr addr = {
    .addr = { 0x80, 0x7d, 0x3a, 0x80, 0x0c, 0x12 },
    .type = MGOS_BT_ADDR_TYPE_PUBLIC,
  };
  if (!mgos_bt_gattc_connect(&addr)) {
    LOG(LL_ERROR, ("Error connectiong to device."));
  }

[rojer]

how about a PR? :)