branches: 1.2.6; 1.2.12;
rather than adding braces in the code, define the offending macro
to "(void)0". This is what similar code in bind9 (up to 9.5) does.
(native NetBSD code usually does "do { } while (/* CONSTCOND */ 0)"
in this case)
Anyway, I've checked the code, didn't find ambiguities due to
the empty statements, so the whole thing is harmless.