Make IF_BUG_ONCE() support ALL_BUGS_ARE_FATAL
... and DISABLE_ASSERTS_IN_UNIT_TESTS.
It's the only assertion/bug macro that doesn't support these debugging modes. Let's fix that.
... and DISABLE_ASSERTS_IN_UNIT_TESTS.
It's the only assertion/bug macro that doesn't support these debugging modes. Let's fix that.