Snippets for liblqr 0.4.2 from Fedora s390x

Sourced from https://kojipkgs.fedoraproject.org/packages/liblqr-1/0.4.2/30.fc45/data/logs/s390x/build.log.

• lqr_carver.c:1264:16: warning: variable 'z0' set but not used [-Wunused-but-set-variable=]
   1264 |     gint x, y, z0;
        |                ^~