`font.FDSelect[i]` returns a GID, not an index of `font.FDArray`. Before this commit `.notdef` might have wrong glyph width in CharStrings, if its fdSelectIndex is not 0 in the input font.
`font.FDSelect[i]` returns a GID, not an index of `font.FDArray`. Before this commit `.notdef` might have wrong glyph width in CharStrings, if its fdSelectIndex is not 0 in the input font.