Makefile: Fix LDFLAGS.
Makefile: Fix LDFLAGS.

Signed-off-by: Robin H. Johnson <aa3b04a87f185a8b919ce94fe21b810489ffb8d4@gentoo.org>

vanhauser-thc/thc-ipv6,vanhauser-thc/thc-ipv6,vanhauser-thc/thc-ipv6