[HarfBuzz] Dotted circles in harfbuzz

[Vignesh Raman]

Hi,

Looks like this is fixing the crash,

-                glyphString[slen++] = C_DOTTED_CIRCLE;
+                //glyphString[slen++] = C_DOTTED_CIRCLE; // Don't
hardcode dotted circle when base glyph is blank
+               item->attributes[slen-1].dontPrint = true; // FIXME
this will hide all dotted circle

-- 
Regards,
Vignesh.