A missed out exception catch in eventio.py

[Aruise]

There are two exception catches for OSError, first one is a pass, second one is unreachable since it is caught and passed already. https://github.com/celery/kombu/blob/67588f8aa7cc6d561f786440485885de5d0753d3/kombu/utils/eventio.py#L72-L79

Probably second one should be caught and OSError in first should be deleted?

[Nusnus]

Care to contribute a fix? :)