Multiple Instruction when casting in both side at the assignment

[MoulatiMehdi]

Describe the bug
when casting in both side of the = at the assignement is considered as multiple instructions

Erroneous code

#include "ft_utils.h"

void	*ft_realloc(void *mem, int size)
{
	void	*new_mem;
	int		i;

	i = 0;
	new_mem = malloc(size);
	if (!new_mem)
		return (0);
	if (mem)
		while (i < size)
		{
			((char *)new_mem)[i] = ((char *)mem)[i]; // <-- Here
		 	i++;
		}
	free(mem);
	return (new_mem);
}

Additional infos
version : norminette 3.3.55

Additional context

ft_realloc.c: Error!
Error: MULT_IN_SINGLE_INSTR (line:  26, col:   1):      Multiple instructions in single line control structure