build: resolve compiler warnings
build: resolve compiler warnings

nlmsg.c: In function "mnl_nlmsg_fprintf":
nlmsg.c:260:4: warning: format "%.3d" expects type "int", but
argument 3 has type "size_t"

Signed-off-by: Jan Engelhardt <f383ed465f890d2e8ea864dd0c28cf8ec50a8942@medozas.de>

fqrouter/libmnl,vyatta/libmnl,Distrotech/libmnl,cyclops8456/libmnl,cyclops8456/libmnl,vyos/libmnl,chamaken/libmnl,Distrotech/libmnl,vyatta/libmnl,greearb/libmnl-ct,cyclops8456/libmnl,vyos/libmnl,remfalc/vyt-libmnl,remfalc/vyt-libmnl,chamaken/libmnl,greearb/libmnl-ct,threatstack/libmnl,threatstack/libmnl,fqrouter/libmnl,vyos/libmnl