Fix work_in_progress in empty git repos
Fix work_in_progress in empty git repos

I noticed that the function ``work_in_progress``, which is used in the "gallois"-theme, would print ``fatal: bad default revision 'HEAD'`` in a new folder after ``git init``.

This is the fix.
kaethorn/oh-my-zsh,kaethorn/oh-my-zsh,kaethorn/oh-my-zsh,kaethorn/oh-my-zsh