added comments

srcs/ft_realloc.c

@@ -6,7 +6,7 @@
 /*   By: thrieg < thrieg@student.42mulhouse.fr>     +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/11/25 11:47:23 by thrieg            #+#    #+#             */
-/*   Updated: 2025/12/08 15:37:18 by thrieg           ###   ########.fr       */
+/*   Updated: 2025/12/08 16:02:18 by thrieg           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -102,7 +102,7 @@ void *realloc(void *ptr, size_t size)
 				{
 					header->size = available_space;
 				}
-				pthread_mutex_unlock(&g_mut);
+				pthread_mutex_unlock(&g_mut); // doesn't need to stay locked because the user is not supposed to free or realloc this ptr or change its content before this realloc returns
 				if (g_state.patern)
 					ft_memset((char *)ptr + original_space, g_state.patern, header->size - original_space); // should I use original_size to only perturb the actually requested bytes instead of the bytes I allocate?
 				return (ptr);