[HB/GDEF] Fix bug in building synthetic GDEF table
[HB/GDEF] Fix bug in building synthetic GDEF table

danny-ku/pango,Distrotech/pango,danny-ku/pango,Distrotech/pango,Distrotech/pango,danny-ku/pango,kari-lentz/alpha-pango,kari-lentz/alpha-pango,kari-lentz/alpha-pango,kari-lentz/alpha-pango