Oh-My-ZSH, gitconfig and using vi as editor

One more "converting to zsh" issue:

When commiting a change using the "gc" command, git would report this error:

error: There was a problem with the editor 'vi'.

Change the editor = vi to editor = vim line in .gitconfig.

There was probably either an alias or a symbolic link to make "vi" = "vim" but that doesn't exist anymore.