RE_populate_bake_pixels working for single faced mesh

If the face has more than one triangle, the second triangle is presenting errors.
Mainly it has vertices with the same coordinates or bogus data.

Example of printed out data in RE_populate_bake_pixels
before calling zspan_scanconvert:

((MTFace *)&cdl[0])->uv
{0.500000238, 1}, {0, 0}, {1, 0}, {0, 0}}

((MTFace *)&cdl[1])->uv
{{0, 0}, {0.500000238, 1}, {0, 0}, {0, 0}}

((MTFace *)&cdl[2])->uv
{{7.87199301e+31, 1.17082983e-19}, {2.17010503e-18,
2.61866902e+20}, {2.61048549e+20, 2.95921708e+21}, {
  6.9779858e+22, 4.66808809e+24}}