MT#61856 sdp.c: properly clean stream params

For the case when we fail in during streams allocation
in `sdp_streams()` we only take care to clean the
main pointer for the stream params, but not about
the subsequent heap allocated stuff like SDES params.

For this purpose we actually have `sp_free()` which takes
care to de-allocate subsequent heap allocated queues.

Change-Id: I326bc91c9194752e901406dc919da9c4ef5aa51a

daemon/sdp.c

@@ -2219,7 +2219,7 @@ next:
 
 error:
 	ilog(LOG_WARNING, "Failed to extract streams from SDP: %s", errstr);
-	g_free(sp);
+	sp_free(sp);
 	return false;
 }