playlist: Also catch IOErrors to restore Python 2.7 compatiblity
playlist: Also catch IOErrors to restore Python 2.7 compatiblity

ibmibmibm/beets,jackwilsdon/beets,sampsyo/beets,SusannaMaria/beets,ibmibmibm/beets,jackwilsdon/beets,sampsyo/beets,beetbox/beets,beetbox/beets,shamangeorge/beets,jackwilsdon/beets,beetbox/beets,ibmibmibm/beets,SusannaMaria/beets,ibmibmibm/beets,shamangeorge/beets,SusannaMaria/beets,shamangeorge/beets,beetbox/beets,sampsyo/beets,jackwilsdon/beets,shamangeorge/beets,sampsyo/beets,SusannaMaria/beets