FS-5228 --resolve problem was actually in the send_silence code as used from…

FS-5228 --resolve problem was actually in the send_silence code as used from park not uuid_displace but uuid_displace relies on the write stream so thus it was a symptom

src/switch_ivr.c

@@ -931,7 +931,7 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_park(switch_core_session_t *session,
 				if (switch_core_codec_init(&codec,
 								   "L16",
 								   NULL,
-								   imp.samples_per_second,
+								   imp.actual_samples_per_second,
 								   imp.microseconds_per_packet / 1000,
 								   imp.number_of_channels,
 								   SWITCH_CODEC_FLAG_ENCODE | SWITCH_CODEC_FLAG_DECODE, NULL,