oggdemux: fix werror build on macos

../ext/ogg/gstoggdemux.c:1071:7: error: format specifies type 'long' but the argument has type 'ogg_int64_t' (aka 'long long') [-Werror,-Wformat]
      packet->granulepos);
      ^~~~~~~~~~~~~~~~~~~
/Library/Frameworks/GStreamer.framework/Versions/1.0/include/gstreamer-1.0/gst/gstinfo.h:1062:96: note: expanded from macro 'GST_DEBUG_OBJECT'
#define GST_DEBUG_OBJECT(obj,...)       GST_CAT_LEVEL_LOG (GST_CAT_DEFAULT, GST_LEVEL_DEBUG,   obj,  __VA_ARGS__)
                                        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
/Library/Frameworks/GStreamer.framework/Versions/1.0/include/gstreamer-1.0/gst/gstinfo.h:646:31: note: expanded from macro 'GST_CAT_LEVEL_LOG'
        (GObject *) (object), __VA_ARGS__);                             \
                              ^~~~~~~~~~~
../ext/ogg/gstoggdemux.c:1312:15: error: format specifies type 'long' but the argument has type 'ogg_int64_t' (aka 'long long') [-Werror,-Wformat]
              packet.granulepos);
              ^~~~~~~~~~~~~~~~~~
/Library/Frameworks/GStreamer.framework/Versions/1.0/include/gstreamer-1.0/gst/gstinfo.h:1060:98: note: expanded from macro 'GST_WARNING_OBJECT'
#define GST_WARNING_OBJECT(obj,...)     GST_CAT_LEVEL_LOG (GST_CAT_DEFAULT, GST_LEVEL_WARNING, obj,  __VA_ARGS__)
                                        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
/Library/Frameworks/GStreamer.framework/Versions/1.0/include/gstreamer-1.0/gst/gstinfo.h:646:31: note: expanded from macro 'GST_CAT_LEVEL_LOG'
        (GObject *) (object), __VA_ARGS__);                             \
                              ^~~~~~~~~~~

ext/ogg/gstoggdemux.c

@@ -1068,7 +1068,7 @@ gst_ogg_pad_submit_packet (GstOggPad * pad, ogg_packet * packet)
   }
 
   GST_DEBUG_OBJECT (ogg, "%p packet has granulepos %" G_GINT64_FORMAT, pad,
-      packet->granulepos);
+      (gint64) packet->granulepos);
   granule =
       gst_ogg_stream_granulepos_to_granule (&pad->map, packet->granulepos);
   if (granule > 0) {
@@ -1309,7 +1309,7 @@ gst_ogg_pad_stream_out (GstOggPad * pad, gint npackets)
         if (packet.granulepos < -1) {
           GST_WARNING_OBJECT (ogg,
               "Invalid granulepos (%" G_GINT64_FORMAT "), resetting stream",
-              packet.granulepos);
+              (gint64) packet.granulepos);
           gst_ogg_pad_reset (pad);
           break;
         }