fixup! Store, save and test message-token and supersedes-token
fixup! Store, save and test message-token and supersedes-token

Addresses:
> > + if (token_str != NULL)
> You might want to use TPL_STR_EMPTY() instead.

> We should be a little more robust, and ignore supersedes if there is no
> token.
I assume that by this, you mean only record it if message-token also exists?

freedesktop-unofficial-mirror/telepathy__telepathy-logger,freedesktop-unofficial-mirror/telepathy__telepathy-logger,freedesktop-unofficial-mirror/telepathy__telepathy-logger