Issue on type42 parsing in Freetype

[Aimar Lu]

Hi,
    I met an issue in function t42_parse_sfnts, the statement in line 692 seem 
incorrect as below:
        size = (FT_ULong)( limit - parser->root.cursor );
   this parser->root.cursor is changed, result the size takes incorrect value, 
it is not size of sfnt table.  
   I use the freetype 2.11.0 library, the function locates in 
src/type42/t42parse.c
   Could you give some advice for the issue? Thanks 
  Best Regards  Aimar