Fix compile error in bta_ag_sco.c

                       then create listen sco connection for it as scb still open */

                    if (bta_ag_scb_open(p_scb))

                    {

                        APPL_TRACE_DEBUG0("create sco listen connection if scb still open");

                        bta_ag_create_sco(p_scb, FALSE);

                        p_sco->state = BTA_AG_SCO_LISTEN_ST;

                    }