Fix micro-optimisation when DNS logging is compiled out.
Fix micro-optimisation when DNS logging is compiled out.

darcs-hash:20070615182550-4cc09-35b318d93e2ed8fa5e28fa2f97c0d4a500a40ccb.gz

clowwindy/polipo,doublec/namecoin-polipo,galeksandrp/polipo,akkakks/polipo,toke/polipo,ssb22/polipo2,strongwillow/polipo,lkraider/polipo,strongwillow/polipo,akkakks/polipo,fqtools/polipo,feijilei/polipo,jech/polipo,dxq-git/polipo,fqtools/polipo,berkley4/polipo,jech/polipo,nxtreaming/chumen,fukusaka/polipo,galeksandrp/polipo,Psiphon-Inc/polipo,lkraider/polipo,berkley4/polipo,ssb22/polipo2,jeromelebel/polipo,fqtools/polipo,dxq-git/polipo,caeies/polipo-caeies,Android-Apps/polipo,galeksandrp/polipo,ssb22/polipo2,feijilei/polipo,Android-Apps/polipo,dxq-git/polipo,nxtreaming/chumen,lkraider/polipo,danchr/polipo,ajmgh/polipo,feijilei/polipo,gorakhargosh/polipo,berkley4/polipo,akkakks/polipo,TierraDelFuego/opilop,jech/polipo,nxtreaming/chumen