Fix for uncaught KeyError.
Fix for uncaught KeyError.

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