Fixed bug with duplicate hostmasks.
Fixed bug with duplicate hostmasks.

ProgVal/Limnoria-test,raboof/supybot,mazaclub/mazabot-core,kblin/supybot-gsoc,mazaclub/mazabot-core,Ban3/Limnoria,prashantpawar/supybot-rothbot,Ban3/Limnoria,frumiousbandersnatch/supybot-code,ProgVal/Limnoria-test,buildbot/supybot,jeffmahoney/supybot,haxwithaxe/supybot