emotty: fix for undefined $TTY (FreeBSD) (#7844)
emotty: fix for undefined $TTY (FreeBSD) (#7844)

See https://github.com/robbyrussell/oh-my-zsh/pull/6731#issuecomment-449653115
monological/oh-my-zsh,monological/oh-my-zsh,monological/oh-my-zsh,monological/oh-my-zsh