Fix bad code in except handler.
Fix bad code in except handler.

gsb-eng/asyncio,vxgmichel/asyncio,overcastcloud/trollius,jashandeep-sohi/asyncio,overcastcloud/trollius,gvanrossum/asyncio,1st1/asyncio,vxgmichel/asyncio,Martiusweb/asyncio,gvanrossum/asyncio,fallen/asyncio,manipopopo/asyncio,Martiusweb/asyncio,jashandeep-sohi/asyncio,haypo/trollius,fallen/asyncio,vxgmichel/asyncio,overcastcloud/trollius,1st1/asyncio,ajdavis/asyncio,manipopopo/asyncio,Martiusweb/asyncio,ajdavis/asyncio,ajdavis/asyncio,1st1/asyncio,fallen/asyncio,haypo/trollius,jashandeep-sohi/asyncio,manipopopo/asyncio,gsb-eng/asyncio,leetreveil/tulip,haypo/trollius,leetreveil/tulip,gvanrossum/asyncio,leetreveil/tulip,gsb-eng/asyncio