ftell() callback uses long instead ogg_int64_t
ftell callback (see: ov_open_callbacks(), etc) returns "long" type instead
of "ogg_int64_t", preventing 2gb+ file sizes from being handled correctly.
ftell callback (see: ov_open_callbacks(), etc) returns "long" type instead
of "ogg_int64_t", preventing 2gb+ file sizes from being handled correctly.