Function krb5_sys::krb5_kt_get_entry

pub unsafe extern fn krb5_kt_get_entry(context: krb5_context,
                                       keytab: krb5_keytab,
                                       principal: krb5_principal,
                                       vno: krb5_kvno,
                                       enctype: krb5_enctype,
                                       entry: *mut krb5_keytab_entry)
                                       -> krb5_error_code