Do not shutdown the mailbox when an IOError occurs in EventedMailbox
Do not shutdown the mailbox when an IOError occurs in EventedMailbox

This is redundant as the exception which is raised will shutdown the
mailbox immediately afterwards.

seuros/celluloid,dilumn/celluloid,celluloid/celluloid,davydovanton/celluloid,jstoja/celluloid,olleolleolle/celluloid,mehta/celluloid,TiagoCardoso1983/celluloid,marshall-lee/celluloid,jasonm23/celluloid,sideci-sample/sideci-sample-celluloid,kenichi/celluloid