Fix bug #1063950, traceback when Weather is an unexpected format.
Fix bug #1063950, traceback when Weather is an unexpected format.

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