bsc: mark compression function as unsafe
bsc: mark compression function as unsafe

libbsc requires the destination buffer to be at least
max_compressed_size bytes.

jibsen/squash,jibsen/squash,Cloudef/squash,Cloudef/squash,quixdb/squash,Cloudef/squash,quixdb/squash,quixdb/squash,jibsen/squash