Fix seeking in large files on 32-bit architectures
Fix seeking in large files on 32-bit architectures

The 'position' member of decodecontext has accidentally
a regular integer instead of an unsigned 64-bit integer.

Signed-off-by: Derek Buitenhuis <aff7d637ede26ea82e5226e01b697996cc52e526@gmail.com>

dwbuiten/d2vsource,dwbuiten/d2vsource