cli: clean up after ourselves, even on failure
cli: clean up after ourselves, even on failure

This is just to make ASan/valgrind happy, mainly so squash(1) is easier
to use with AFL + ASan.

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