* A number other than 0x10d00 is written in the version field of the WIM
* header of @a wim_file. (Probably a pre-Vista WIM).
* @retval ::WIMLIB_ERR_WIM_IS_READONLY
* A number other than 0x10d00 is written in the version field of the WIM
* header of @a wim_file. (Probably a pre-Vista WIM).
* @retval ::WIMLIB_ERR_WIM_IS_READONLY