Authenticator: pbkd5(): Mark as const

authenticator.h

@@ -18,7 +18,7 @@ class Authenticator
 	UserDao *userDao;
 	bool isBanned(std::string ip);
 	void incFailureCount(std::string ip);
-	std::vector<char> pbkdf5(std::string password, const std::vector<char> &salt);
+	std::vector<char> pbkdf5(std::string password, const std::vector<char> &salt) const;
 
   public:
 	Authenticator(UserDao &userDao);