[ft] Displacement

[Chi]

Hi,

I have just upgraded from 2.1.4 to 2.2.1.
Found the height returned is a little bit different then before, so I can
see it is displaced on the y.
I use  (* m_pFace)->size->metrics.height * 0.015625f;
to calculate the height of a font face. I tried arial8.
2.1.4 returns 13.0 while 2.2.1 returns 12.0 .

Could anyone know how should I follow?

Chi