|void||idn_free (void *ptr)|
|void idn_free||(||void *||ptr||)|
|ptr||memory region to deallocate, or NULL.|
Deallocates memory region by calling free(). If is NULL no operation is performed.
Normally applications de-allocate strings allocated by libidn by calling free() directly. Under Windows, different parts of the same application may use different heap memory, and then it is important to deallocate memory allocated within the same module that allocated it. This function makes that possible.