freetype: mishandling ps_parser_skip_PS_token in an FT_New_Memory_Face operation in skip_comment, psaux/psobjs.c, leads to a buffer over-read

FreeType before 2.6.1 has a buffer over-read in skipcomment in psaux/psobjs.c because psparserskipPStoken is mishandled in an FTNewMemoryFace operation...