Do not defer call update for ICE candidates gathering when the ICE session...

Do not defer call update for ICE candidates gathering when the ICE session returned that gathering is not needed.

coreapi/misc.c

@@ -743,12 +743,13 @@ int linphone_core_gather_ice_candidates(LinphoneCore *lc, LinphoneCall *call){
 	}
 	if ((ai != NULL) && (nat_policy != NULL)
 		&& (linphone_nat_policy_stun_enabled(nat_policy) || linphone_nat_policy_turn_enabled(nat_policy))) {
+		bool_t gathering_in_progress;
 		ms_message("ICE: gathering candidate from [%s] using %s", server, linphone_nat_policy_turn_enabled(nat_policy) ? "TURN" : "STUN");
 		/* Gather local srflx candidates. */
 		ice_session_enable_turn(call->ice_session, linphone_nat_policy_turn_enabled(nat_policy));
 		ice_session_set_stun_auth_requested_cb(call->ice_session, (MSStunAuthRequestedCb)stun_auth_requested_cb, call);
-		ice_session_gather_candidates(call->ice_session, ai->ai_addr, (socklen_t)ai->ai_addrlen);
-		return 1;
+		gathering_in_progress = ice_session_gather_candidates(call->ice_session, ai->ai_addr, (socklen_t)ai->ai_addrlen);
+		return (gathering_in_progress == FALSE) ? 0 : 1;
 	} else {
 		ms_message("ICE: bypass candidates gathering");
 		ice_session_compute_candidates_foundations(call->ice_session);

mediastreamer2 @ b8d8b9dd

-Subproject commit 417a1bb884dfb54758c82a5f642977ee99b1ba7b
+Subproject commit b8d8b9dd7323a3043c9c78a053fdf4468123703e