Snippets for rpki-client 9.9 from Alpine s390x

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-s390x/community/rpki-client/rpki-client-9.9-r0.log.

• vis.c:252:23: warning: pointer 'buf' may be used after 'realloc' [-Wuse-after-free]
    252 |                 *outp = buf;
        |                 ~~~~~~^~~~~