MT#56374 perf-tester fixes

Change-Id: I09cefd0ab447c80b8200c0542cb3e008f7dd1da5
(cherry picked from commit c0dac00d53)

perf-tester/log.c

@@ -39,7 +39,7 @@ GQueue *get_log_lines(uint num, uint end) {
 	while (l && end--)
 		l = l->prev;
 	for (; l && num; num--, l = l->prev)
-		g_queue_push_tail(ret, g_strdup(l->data));
+		g_queue_push_head(ret, g_strdup(l->data));
 
 	return ret;
 }

perf-tester/main.c

@@ -249,7 +249,6 @@ static int got_packet_pkt(struct stream *s, AVPacket *pkt) {
 // stream is locked
 static int got_packet(encoder_t *encoder, void *p1, void *p2) {
 	AVPacket *pkt = encoder->avpkt;
-	pkt->pts = fraction_multl(pkt->pts, &encoder->clockrate_fact);
 	return got_packet_pkt(p1, pkt);
 }