FreeBSD build: must pass sanitize options at link time

Author: davmac314

configs/mconfig.FreeBSD

@@ -17,7 +17,7 @@ CPPFLAGS=
 LDFLAGS_BASE=-lrt
 LDFLAGS=$(LDFLAGS_BASE)
 TEST_CXXFLAGS=$(CXXFLAGS) -fsanitize=address,undefined
-TEST_LDFLAGS_BASE=$(LDFLAGS_BASE)
+TEST_LDFLAGS_BASE=$(LDFLAGS_BASE) -fsanitize=address,undefined
 TEST_LDFLAGS=$(TEST_LDFLAGS_BASE)
 BUILD_SHUTDOWN=no