
Commit 06f44c3 (completion: make compatible with zsh) broke bash compatibility with 'set -u': a warning was generated when checking $ZSH_VERSION. The solution is to supply a default value, using ${ZSH_VERSION-}. Thanks to SZEDER Gábor for the fix. Signed-off-by: Mark Lodato <lodatom@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>