ignore "Ignoring DSIG" fontforge message
ignore "Ignoring DSIG" fontforge message

(issue #1071)

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