Fix install script under OpenBSD
Fix install script under OpenBSD

the-lambda-church/merlin,chambart/merlin,ocaml/merlin,haselwarter/merlin,chriskonstad/merlin,chriskonstad/merlin,haselwarter/merlin,neojski/merlin,fxfactorial/merlin,chambart/merlin,ocaml/merlin,rgrinberg/merlin,neojski/merlin,rgrinberg/merlin,haselwarter/merlin,neojski/merlin,fxfactorial/merlin,rgrinberg/merlin,dra27/merlin,neojski/merlin,haselwarter/merlin,dra27/merlin,fxfactorial/merlin,chambart/merlin,rgrinberg/merlin,ocaml/merlin,ocaml/merlin,the-lambda-church/merlin,chambart/merlin,dra27/merlin,dra27/merlin,fxfactorial/merlin,the-lambda-church/merlin