Lack of support for LZ4 compression

[qkaiser]

Came upon this sample during testing:

file f119d0e499e8350d6aa2c1ee0842f9fa5c2b4aee.squashfs.v4.lz4
Squashfs filesystem, little endian, version 4.0, lz4 compressed, 30152011 bytes, 1343 inodes, blocksize: 131072 bytes, created: Thu Apr 26 09:23:33 2018

sasquatch does not seem to be supporting LZ4 at this time:

sasquatch f119d0e499e8350d6aa2c1ee0842f9fa5c2b4aee.squashfs.v4.lz4
SquashFS version [4.0] / inode count [1343] suggests a SquashFS image of the same endianess
Filesystem uses lz4 compression, this is unsupported by this version
Trying to decompress with lzma...
Trying to decompress with lzma-adaptive...
Trying to decompress with lzma-alt...
Trying to decompress with lzma-ddwrt...
Trying to decompress with lzo...
Trying to decompress with xz...
read_block: failed to read block @0x1cc1524
FATAL ERROR - Failed to read xattr id table block 0, from 0x1cc1524, length 0.  File system corrupted?

Would be nice to add support for it :) I can send the sample to anyone who asks.

[martonilles]

Fixed in db9da1c