Fixes __exit__ for Producer
Fixes __exit__ for Producer

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