Fixed test breaking on Python 2.4 because the repr of KeyError is different there
Fixed test breaking on Python 2.4 because the repr of KeyError is different there

daevaorn/kombu,mverrilli/kombu,depop/kombu,pantheon-systems/kombu,depop/kombu,cce/kombu,xujun10110/kombu,cce/kombu,tkanemoto/kombu,urbn/kombu,celery/kombu,alex/kombu,WoLpH/kombu,andresriancho/kombu,WoLpH/kombu,pantheon-systems/kombu,iris-edu-int/kombu,daevaorn/kombu,disqus/kombu,disqus/kombu,andresriancho/kombu,Elastica/kombu,romank0/kombu,numb3r3/kombu,tkanemoto/kombu,xujun10110/kombu,bmbouter/kombu,Elastica/kombu,ZoranPavlovic/kombu,alex/kombu,iris-edu-int/kombu,jindongh/kombu,ZoranPavlovic/kombu,romank0/kombu,mathom/kombu,mverrilli/kombu,mathom/kombu,numb3r3/kombu,jindongh/kombu,bmbouter/kombu