This fixes the compiler warning of using the wrong type for gzgets() and
gzclose() as they want a gzFile argument, not a pointer to gzFile. The
abstraction layer pci_id_file should just abstract the full type.
Signed-off-by: Mathias Krause <mathias.krause@secunet.com> Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>