git: 9fc8132ecaf2..345cf360f8b8 - vendor/expat - vendor branch updated

[Xin LI]

The branch vendor/expat has been updated by delphij:

URL: https://cgit.FreeBSD.org/src/log/?id=9fc8132ecaf2..345cf360f8b8

345cf360f8b8 Vendor import of expat 2.6.0