Basic Functions working, but with memory leaks

All basic functions are working!

void	ft_swap(t_stack **stack);
void	ft_swap_ab(t_stack **stack_a, t_stack **stack_b);
void	ft_push_a(t_stack **stack_a, t_stack **stack_b);
void	ft_push_b(t_stack **stack_a, t_stack **stack_b);
void	ft_rotate(t_stack **stack);
void	ft_rotate_ab(t_stack **stack_a, t_stack **stack_b);
void	ft_reverse_rotate(t_stack **stack);
void	ft_reverse_rotate_ab(t_stack **stack_a, t_stack **stack_b);

However, there is has some memory leaks T.T