Fixed bug with empty [] in command.
Fixed bug with empty [] in command.

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