Travis: Fix installing osxfuse on darwin
Travis: Fix installing osxfuse on darwin

byo/restic,pombredanne/restic,ar-jan/restic,restic/restic,middelink/restic,kurin/restic,kurin/restic,stuertz/restic,jayme-github/restic,howeyc/restic,intfrr/restic,klauspost/restic,middelink/restic,jayme-github/restic,ckemper67/restic,fawick/restic,arithmetric/restic,episource/restic,stuertz/restic,byo/restic,fawick/restic,mappu/restic,bchapuis/restic,restic/restic,ar-jan/restic