Function register_error_str

lib/hidapi/mac/hid.c:239–243

Makes a copy of the given error message (and decoded according to the * currently locale) into the wide string pointer pointed by error_str. * The last stored error string is freed. * Use register_error_str(NULL) to free the error message completely. */

 * The last stored error string is freed.
 * Use register_error_str(NULL) to free the error message completely. */
static void register_error_str(wchar_t **error_str, const char *msg)
{
	free(*error_str);
	*error_str = utf8_to_wchar_t(msg);
}

/* Similar to register_error_str, but allows passing a format string with va_list args into this function. */
static void register_error_str_vformat(wchar_t **error_str, const char *format, va_list args)