fix pango_fc_font_map_get_hb_face function
pango_fc_font_map_get_hb_face
creates hb_face
from FcFont
.
The original function uses the file name stored in FcFont
to create hb_face
, but fonts created in memory by freetype
may also exist in FcPattern
. When FcPattern
contains FT_Face
,
we should also try to create hb_face
from FT_Face
.