PS buglet while handling TT fonts

[Werner LEMBERG]

Han-Wen,


after processing xiao-haizi-guai-guai.ly, I see the following in the
/CharStrings dictionary of GBZenKai-Medium:

  /CharStrings 7764 dict dup begin
    /uni0000 0 def 
    /uni0000 1 def
    /uni0000 2 def
    ...
    /uni0000 31 def
    /uni0020 32 def
    /uni0021 33 def
    ...

Apparently you don't iterate over the Unicode cmap of this font,
otherwise you would get just a single `/uni0000' entry and not 31.
BTW, later in the CharStrings array there are even more `/uni0000'
entries...


    Werner