mxfenc: fix av_log data type for dts paramater

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/mxfenc.c

@@ -2107,7 +2107,7 @@ static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket
         }
 
         *out = pktl->pkt;
-        av_dlog(s, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
+        av_dlog(s, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);
         s->packet_buffer = pktl->next;
         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;