I am a bit surprised to see this - are ircd packages sponsored now? There's a similar issue in Charybdis and I deliberately marked it as unsupported in LTS because, AFAIK, no customer expressed the need to support those yet.
I'd be glad to see if we can update charybdis in Wheezy as well, but to be honest, i think people running IRCs on wheezy are really looking for trouble, both in the case of charybdis and inspircd. I think they should be marked as unsupported, because they are not supported upstream. I had an interesting conversation with the inspircd maintainers recently, over IRC: they are basically saying that 2.0.5 is full of security holes, and they do not bother with issuing CVEs, so it's really hard to tell what version if affected by what. It's only because I requested those CVEs that this issue propped up on Debian's radar at all, btw... A. -- Le pouvoir n'est pas à conquérir, il est à détruire - Jean-François Brient, de la servitude moderne