Avoid useless conditional request if CACHE_MISMATCH.
Avoid useless conditional request if CACHE_MISMATCH.

darcs-hash:20070703181320-4cc09-fd639f06553d38fd97f248974c43e3fde217e853.gz

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