MT#60827 use correct free function

Change-Id: Ifc492c579872358cdd2dc5fa3f2f20cbbab72c57
(cherry picked from commit ee2e976b08)
(cherry picked from commit 85feb1093f)

daemon/codec.c

@@ -4015,7 +4015,7 @@ void packet_encoded_packetize(AVPacket *pkt, struct codec_ssrc_handler *ch, stru
 
 		if (G_UNLIKELY(ret == -1 || pkt->pts == AV_NOPTS_VALUE)) {
 			// nothing
-			free(buf);
+			bufferpool_unref(buf);
 			break;
 		}