passage --version returns with exit 1 if identities are missing

Expected behavior:
No matter if the standard path to stores and identities as well as env vars like PASSAGE_DIR and/or PASSAGE_IDENTITIES_FILE are empty the exit status code for `passage --version` will be 0.

Actual behavior:
passage returns with exit status 1 if the standard identities path and PASSAGE_IDENTITIES_FILE are empty.

Because passage returns without error if standard store and PASSAGE_DIR are empty, I would think that also with missing identities passage should exit without an error.