Gem::Package::TarReader::Entry#close

# File tmp/rubies/ruby-4.1.0-preview1/lib/rubygems/package/tar_reader/entry.rb, line 59
def close
  return if closed?
  # Seek to the end of the entry if it wasn't fully read
  seek(0, IO::SEEK_END)
  # discard trailing zeros
  skip = (512 - (@header.size % 512)) % 512
  @io.read(skip)
  @closed = true
  nil
end