Add additional safeguards
Co-authored-by: Voyager1 voyager@xbmc.org
Another low hanging fruit, just some small safeguards we have had for a long time. Won't likely fix anything but at least make the lib handling a bit more robust:
- Checks for nullptr in
dvdnav_get_restrictions
- Avoids decreasing the usage_count in the hypothetical case the code path gots there and its value is 0 or below