fix crash: Cagliostro: on "check_font_version_fields"
fix crash: Cagliostro: on "check_font_version_fields"

(issue #1333)

graphicore/fontbakery,graphicore/fontbakery,googlefonts/fontbakery,googlefonts/fontbakery,graphicore/fontbakery,moyogo/fontbakery,moyogo/fontbakery,moyogo/fontbakery,googlefonts/fontbakery