Setting up OTC V8 RSA source editing error

[henkas]

Hello
so im trying to install otc v8 and doing those source edits from commits and im already stuck with the first one
https://github.com/OTCv8/forgottenserver...b1b4b4456b

so im getting 
1>..\src\rsa.cpp(76): error C3861: 'find_first_not_of': identifier not found
1>..\src\rsa.cpp(77): error C3861: 'find_last_not_of': identifier not found

Manged to fix most of these errors and these ones left so this is how my rsa.cpp edited code looks now

Code:

    // fixes "Missing RSA private key footer." error
    mpz_clear(0, find_first_not_of(" \t\f\v\n\r"));
    mpz_clear(find_last_not_of(" \t\f\v\n\r") + 1);

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