Freetype: Fix have_font for memory fonts.
Freetype: Fix have_font for memory fonts.

mammadori/pyglet,theblacklion/pyglet,oktayacikalin/pyglet,mammadori/pyglet,oktayacikalin/pyglet,oktayacikalin/pyglet,theblacklion/pyglet,mammadori/pyglet,theblacklion/pyglet,theblacklion/pyglet,oktayacikalin/pyglet,mammadori/pyglet,oktayacikalin/pyglet,theblacklion/pyglet