Fix potential null dereference in avdt_ccb_hdl_getcap_cmd

 *

 ******************************************************************************/

void avdt_ccb_hdl_getcap_cmd(AvdtpCcb* p_ccb, tAVDT_CCB_EVT* p_data) {

  AvdtpScb* p_scb;

  /* look up scb for seid sent to us */

  p_scb = avdt_scb_by_hdl(p_data->msg.single.seid);

  AvdtpScb* p_scb = avdt_scb_by_hdl(p_data->msg.single.seid);

  if (p_scb == nullptr) {

    /* not ok, send reject */

    p_data->msg.hdr.err_code = AVDT_ERR_BAD_STATE;

    p_data->msg.hdr.err_param = p_data->msg.single.seid;

    avdt_msg_send_rej(p_ccb, AVDT_SIG_START, &p_data->msg);

    return;

  }

  p_data->msg.svccap.p_cfg = &p_scb->stream_config.cfg;