Do not use 0 in the generated temporary password

[szszszsz]

libnitrokey processes the binary password with strcpy, thus binary 0 might shorten the temporary password. Do not include 0 value in the generated pass to workaround this bug for backwards compatibility.

Connected: Nitrokey/libnitrokey#180

nitrokey-app/src/GUI/Authentication.cpp

Lines 122 to 129 in 2151df4

	static std::uniform_int_distribution<unsigned char> dist(0, 0xFF);
	auto temporary_password_length = 25;
	QByteArray tmp_p(temporary_password_length, 0);
	auto size = tmp_p.size();
	for (int i = 0; i < size; i++){
	tmp_p[i] = dist(mt);
	}