Snippets for tkimg 2.1.1 from Fedora s390x

Sourced from https://kojipkgs.fedoraproject.org/packages/tkimg/2.1.1/1.fc46/data/logs/s390x/build.log.

• window.c:82:1: warning: old-style function definition [-Wold-style-definition]
     82 | xerrorhandler(clientData, e)
        | ^~~~~~~~~~~~~