- return (pat->not ^ match_adrlist (pat->rx, flags & M_MATCH_FULL_ADDRESS,
- pat->alladdr, 2, h->env->to, h->env->cc));
+ return (pat->not ^ (h->env && match_adrlist (pat->rx, flags & M_MATCH_FULL_ADDRESS,
+ pat->alladdr, 2, h->env->to, h->env->cc)));