In struct CFF_Font_Dict_, added a units_per_em member to facilitate passing of units_per_em form function cff_parse_font_matrix.
diff --git a/include/freetype/internal/cfftypes.h b/include/freetype/internal/cfftypes.h
index 9de2906..f90d43b 100644
--- a/include/freetype/internal/cfftypes.h
+++ b/include/freetype/internal/cfftypes.h
@@ -100,6 +100,7 @@ FT_BEGIN_HEADER
FT_Int paint_type;
FT_Int charstring_type;
FT_Matrix font_matrix;
+ FT_UShort units_per_em;
FT_Vector font_offset;
FT_ULong unique_id;
FT_BBox font_bbox;