[fix] 部分CJK显示不出来

fonts/ttf/ttf.cpp

@@ -37,7 +37,6 @@ static f26_6 render_codepoint(ttf_face_t* face, SSINT32 cp,
     EFI_GRAPHICS_OUTPUT_BLT_PIXEL color)
 {
     SUINT16 gid = ttf_cmap_lookup(face, cp);
-    if (gid == 0 && cp != 0) gid = 0;  // notdef
 
     if (!ttf_load_glyph(face, gid, pixel_size, &s_outline)) {
         return 0;  // composite / parse error
@@ -83,8 +82,6 @@ static f26_6 render_codepoint(ttf_face_t* face, SSINT32 cp,
     ttf_rasterize(s_segs, n_segs, 0, 0, pw, ph, s_coverage, N);
 
     // Screen origin of bitmap
-    //   bitmap (0, 0) is at font (xmin, ymax) which is at screen
-    //   (x + xmin/64, y - ymax/64) since screen y is flipped
     SSINT32 px_screen = x + (s_outline.xmin >> 6);
     SSINT32 py_screen = y - (s_outline.ymax  >> 6);