pjproject: avoid to cancel succesful connection

The timer is triggered through a passive candidate, so it should
be done only if the timer is none.

Change-Id: I89a16467667393949ad38b4184b4edfb0a452675

contrib/src/pjproject/0001-rfc6544.patch

@@ -669,7 +669,7 @@ index fff4fad26..e7f8b84eb 100644
      if (status != PJ_SUCCESS && status != PJ_EPENDING) {
  	app_perror("    error: server sending data", status);
 diff --git a/pjnath/src/pjnath/ice_session.c b/pjnath/src/pjnath/ice_session.c
-index 2a4125bc5..526c8e13f 100644
+index 2a4125bc5..d2eae9494 100644
 --- a/pjnath/src/pjnath/ice_session.c
 +++ b/pjnath/src/pjnath/ice_session.c
 @@ -18,6 +18,7 @@
@@ -966,10 +966,10 @@ index 2a4125bc5..526c8e13f 100644
 +    case PJ_CAND_TCP_SO:
 +    default:
 +        if (lcand->type == PJ_ICE_CAND_TYPE_RELAYED) {
-+            pj_timer_heap_cancel_if_active(ice->stun_cfg.timer_heap,
-+                                           &ice->timer, TIMER_NONE);
 +            status = (*ice->cb.select_turn_dataconn)(ice, clist, check_id);
 +            if (ice->timer.id == TIMER_NONE) {
++				pj_timer_heap_cancel_if_active(ice->stun_cfg.timer_heap,
++											&ice->timer, TIMER_NONE);
 +                pj_time_val delay = {
 +                    .sec  = 0,
 +                    .msec = 1500