Low priority: Unblock xml-security-c/1.4.0-3

[Luk Claes]

Russ Allbery wrote:
> xml-security-c 1.4.0-3 drops a Suggest for a package that no longer exists
> (upstream did not include API documentation in their 1.4.0 release, so
> there's no longer a separate doc package).  Resolves a debcheck
> inconsistency error from the dangling dependency.  (There's also a typo
> fix in the previous changelog entry.)

unblocked

Cheers

Luk