DARK • BYPASS

__int64 __fastcall sub_4DF2BC(__int64 a1)
{
  if ( !*(_BYTE *)(a1 + 48) )    // check if object is initialized/valid
    return 0xFFFFFFFF;            // return error if not
  if ( pthread_mutex_lock((pthread_mutex_t *)(a1 + 8)) )  // lock mutex
    return 0xFFFFFFFF;            // return error if lock fails
  return 0;                       // success
}