Does not work on Mojave

```
 sudo ./keychaindump ~/Library/Keychains/login.keychain
Password:
[*] Searching process 108 heap range 0x7f7faec00000-0x7f7faf000000
[-] Requested 4194304 bytes, got 0 bytes
[-] Error (268435459) reading task memory @ 0x7f7faec00000
[*] Found 0 master key candidates
```