Added an assert to unAction.
Added an assert to unAction.

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