* Exception: if the compressed size happens to be *exactly* the same as
* the uncompressed size, then the blob *must* be written uncompressed
* in order to remain compatible with the Windows Overlay Filesystem
* Exception: if the compressed size happens to be *exactly* the same as
* the uncompressed size, then the blob *must* be written uncompressed
* in order to remain compatible with the Windows Overlay Filesystem